Best Synthetic Sleeping Bag For Backpacking (2024 Updated)

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If you're planning a backpacking trip, one of the most important pieces of gear you'll need is a good sleeping bag. But with so many options on the market, it can be overwhelming to choose the right one. While down sleeping bags are popular for their warmth and compressibility, synthetic sleeping bags have their own advantages. They're often more affordable, dry faster, and retain warmth even when wet. In this article, we'll look at five key points to consider when choosing the best synthetic sleeping bag for backpacking.

First, consider the temperature rating. Sleeping bags are typically rated for the lowest temperature they can keep you warm in. However, these ratings can be subjective, so it's important to consider your personal comfort level and the conditions you'll be camping in.

Second, look at the weight and packability. A lightweight sleeping bag is essential for backpacking, as it won't weigh you down on the trail. You'll also want to consider how small the bag can be packed, as space in your backpack is limited.

Third, consider the size and shape of the sleeping bag. Mummy bags are more thermally efficient, but can feel restrictive. Rectangular bags offer more room to move around, but can be less warm.

Fourth, look at the materials used in the sleeping bag. Synthetic insulation can vary in quality, and some materials may be more durable or comfortable than others.

Finally, consider the price. While it's important to invest in a high-quality sleeping bag, it's also important to stay within your budget. There are many affordable options on the market that still offer excellent performance.

10 Best Synthetic Sleeping Bag For Backpacking

1. Kelty Cosmic Synthetic Fill 20 Degree Sleeping Bag (Regular) With Compression Straps And Stuff Sack.

The Kelty Cosmic Synthetic Fill 20 Degree Backpacking Sleeping Bag in Dark Shadow is a limited run colorway that offers reliable warmth in cold and damp conditions. With a temperature rating of 20 degrees Fahrenheit, this sleeping bag is perfect for backpackers and campers who need a comfortable night's sleep. It comes in a regular size that fits sleepers up to 6ft 6in and has a fill weight of 33oz with a total weight of 3lbs. The stuff size (non-compressed) is 16×9.5 inches, making it easy to pack and carry.

One of the standout features of the Kelty Cosmic Synthetic Fill 20 Degree Backpacking Sleeping Bag is its packability. The integrated compression stuff sack, coupled with the premium packability of the synthetic fill, allows the Cosmic Synthetic to reach minimalist standards of backpacking gear. The trail weight varies by temperature rating, ranging from 2lbs 6oz to 4lbs 11oz.

The insulation in the Kelty Cosmic Synthetic Fill 20 Degree Backpacking Sleeping Bag is made of CirroLoft synthetic insulation, which provides reliable warmth in cold and damp conditions. It maintains loft for even coverage with no cold spots. Temperature ratings range from 0 degrees to 40 degrees, ensuring that your time on the trail is comfortable.

The Kelty Cosmic Synthetic Fill 20 Degree Backpacking Sleeping Bag has a natural fit spacious footbox that gives more room to wiggle your toes, and length options range to fit sleepers 5’8” to 6’6”. Additionally, there is a handy stash pocket on the exterior of the bag for your overnight goodies and essentials in the tent.

Kelty is synonymous with quality in the outdoor community, and the Cosmic Synthetic Bag is no exception. Kelty gear is built for play and built to last. The Cosmic Synthetic Bag is ready to be put through the ringer on the trail, campground, and everywhere in between.

The two-way zipper on the Kelty Cosmic Synthetic Fill 20 Degree Backpacking Sleeping Bag provides an on-demand foot vent, and room to wiggle. No need to overheat at night with this feature.

To maintain the quality of the Kelty Cosmic Synthetic Fill 20 Degree Backpacking Sleeping Bag, it is recommended to hand wash it. This sleeping bag is perfect for camping and hiking enthusiasts who want a comfortable and reliable sleeping bag that can withstand the rigors of the trail.

2. Kelty Cosmic Synthetic 0 Degree Sleeping Bag – Regular Size With Compression Straps And Stuff Sack.

The Kelty Cosmic Synthetic Fill 0 Degree Backpacking Sleeping Bag is the ideal companion for cold and damp conditions on the trail. With a temperature rating of 0 degrees and a fill weight of 55oz, this sleeping bag is designed to provide reliable warmth while maintaining even coverage and no cold spots.

The regular size of the bag fits sleepers up to 6ft and has a total weight of 4lbs 6oz. It also has a stuff size of 17×11 inches when non-compressed, making it easy to pack for any backpacking adventure. The bag is available in Fired Brick Red/Smoke color and is crafted with Kelty's signature quality and attention to detail.

One of the standout features of the Cosmic Synthetic sleeping bag is its packability. The integrated compression stuff sack allows for easy packing and minimal space usage. The synthetic fill also contributes to its packability, making it a great option for minimalist backpackers. The trail weight varies by temperature rating, ranging from 2lbs 6oz to 4lbs 11oz.

The Cirroloft synthetic insulation used in the Cosmic Synthetic sleeping bag provides reliable warmth in cold and damp conditions. The insulation maintains loft for even coverage and no cold spots, ensuring a comfortable night's sleep in any condition. The temperature ratings range from 0 degrees to 40 degrees, providing options for any season and climate.

The Cosmic Synthetic sleeping bag is tailored for a comfortable fit, with a spacious footbox that allows for more room to wiggle your toes. Length options range to fit sleepers 5'8" to 6'6". Additionally, there is a handy stash pocket on the exterior of the bag for overnight essentials and goodies in the tent.

Kelty is a brand synonymous with quality in the outdoor community. Their gear is built to last and designed for play. The Cosmic Synthetic sleeping bag is no exception to this standard. It is ready to be put through the ringer on the trail, campground, and everywhere in between.

Overall, the Kelty Cosmic Synthetic Fill 0 Degree Backpacking Sleeping Bag is a reliable and high-quality option for any backpacker seeking warmth, comfort, and packability. Its thoughtful design and craftsmanship make it an excellent investment for any outdoor adventure.

3. North Face Backpacking Sleeping Bag In Arrowwood Yellow/zinc Grey, Long-Right Hand, Rated For 30f / -1c.

The North Face Wasatch 30F / -1C Backpacking Sleeping Bag, Arrowwood Yellow/Zinc Grey, Long-Right Hand is the perfect choice for campers who want to enjoy a comfortable night's sleep. This sleeping bag is designed for three-season use at lower altitudes and features full-length synthetic insulation (made from 50% recycled content) and a durable water-repellent finish.

One of the standout features of this sleeping bag is the 50% post-consumer recycled Heatseeker synthetic insulation. This insulation has a great warmth to weight ratio and can be easily packed into a stuff sack. The warm yet lightweight synthetic insulation makes this long-lasting sleeping bag a camp staple.

The unisex sleeping bag is designed with a full-length zip for easy entry and exit and has an articulated hood with cinch-cord for increased mobility and sealing out the cold. The bag's temperature rating of 30-degrees Fahrenheit (-1 Celcius) and up ensures that campers will stay warm and comfortable at the campsite. However, it is important to note that the temperature limit can fluctuate depending on regional weather conditions.

The North Face Wasatch 30F / -1C Backpacking Sleeping Bag is available in two sizes: regular and long. The regular size weighs 2 lbs 8 oz (1130 g) and is suitable for users up to 6' (183 cm). The long size weighs 2 lbs 10 oz (1200 g) and can accommodate users up to 6'6" (198 cm).

Overall, the North Face Wasatch 30F / -1C Backpacking Sleeping Bag is a high-quality option for campers who want to enjoy a comfortable night's sleep in a bag that is designed to last. With its recycled insulation and durable construction, this sleeping bag will provide warmth and comfort for years to come.

4. Kelty Cosmic Synthetic 40 Degree Sleeping Bag, Compact & Lightweight W/ Compression Straps, 2022 (Regular)

The Kelty Cosmic Synthetic Fill 40 Degree Backpacking Sleeping Bag with Compression Straps is the perfect addition to any outdoor adventurer's gear collection. Designed with convenience and comfort in mind, this sleeping bag is a must-have for any camping or backpacking trip.

The 40-degree temperature rating of this sleeping bag makes it ideal for use in warmer weather conditions. The regular size is suitable for sleepers up to 6 feet, with a fill weight of 24 ounces and a total weight of 2 pounds 6 ounces. The stuff size (non-compressed) is 15×8 inches, making it easy to pack and transport.

The Kelty Cosmic Synthetic sleeping bag is designed with packability in mind. It comes with an integrated compression stuff sack that allows you to compress the sleeping bag to a small size, making it easy to carry in your backpack. The synthetic fill provides premium packability, allowing the Cosmic Synthetic to reach minimalist standards of backpacking gear. The trail weight varies by temperature rating, from 2 pounds 6 ounces to 4 pounds 11 ounces.

This sleeping bag is insulated with Cirroloft synthetic insulation that provides reliable warmth in cold and damp conditions. It maintains loft for even coverage with no cold spots. The temperature ratings range from 0 degrees to 40 degrees, ensuring that your time on the trail is comfortable.

The Kelty Cosmic Synthetic sleeping bag is designed for a tailored fit. The natural fit spacious footbox gives more room to wiggle your toes, and length options range to fit sleepers 5’8” to 6’6”. It also comes with a handy stash pocket on the exterior of the bag for your overnight goodies and essentials in the tent.

Kelty is synonymous with quality in the outdoor community, and their craftsmanship is evident in the Cosmic Synthetic sleeping bag. Built for play and built to last, this sleeping bag is ready to be put through the ringer on the trail, campground, and everywhere in between.

In summary, the Kelty Cosmic Synthetic Fill 40 Degree Backpacking Sleeping Bag with Compression Straps is a must-have for any outdoor adventurer. With its packability, insulation, tailored fit, and Kelty craftsmanship, it is the perfect sleeping bag for any camping or backpacking trip.

5. Sea To Summit Trailhead 20-Degree Synthetic Sleeping Bag, Regular

The Sea to Summit Trailhead 20-Degree Synthetic Sleeping Bag, Regular is a high-quality, 3-season sleeping bag designed for backpacking and travel. With a 20-degree Fahrenheit (-7-degree Celsius) rating, this sleeping bag is ideal for cooler weather conditions.

The relaxed mummy shape of the sleeping bag features a shaped hood and zipper draft tubes that help to retain warmth and keep the user comfortable throughout the night. The synthetic polyester insulation uses WaveLoft construction, which maximizes loft and expands the insulation to trap warm air within the bag.

The sleeping bag is constructed from 30D nylon with a DWR treatment that helps to repel water and moisture. The YKK zippers provide full-length left-side access with two sliders for ventilation and versatility. The bag can also be fully unzipped to be used as a quilt.

The relaxed mummy shape of the sleeping bag offers ample room for the user to sleep comfortably. Removable straps on the underside attach to a sleeping pad, ensuring that the bag stays securely in place throughout the night.

The regular size sleeping bag has a maximum user height of six feet and weighs three pounds. When not in use, the sleeping bag can be compressed to just 10.2 liters with the included compression sack, making it easy to transport and store.

Overall, the Sea to Summit Trailhead 20-Degree Synthetic Sleeping Bag, Regular is an excellent choice for anyone looking for a high-quality sleeping bag that is both comfortable and versatile. With its durable construction, efficient insulation, and user-friendly features, this sleeping bag is sure to provide many nights of restful sleep for years to come.

6. The North Face Wasatch 20f / -7c Backpacking Sleeping Bag, Aegean Blue/zinc Grey, Regular-Right Hand

The North Face Wasatch 20F / -7C Backpacking Sleeping Bag is the perfect choice for those looking for a comfortable and warm camping experience. This sleeping bag features full-length synthetic insulation made from 50% recycled content, making it an eco-friendly option for outdoor enthusiasts. The durable water-repellent finish ensures that you stay warm and dry even in moderately cold conditions.

The North Face Wasatch 20F / -7C Backpacking Sleeping Bag is designed with quality construction in mind. It features a full-length zip for easy entry and exit, making it convenient for you to get in and out of the sleeping bag. The articulated hood with cinch-cord provides increased mobility and helps seal out the cold, ensuring that you stay warm and comfortable throughout the night.

The North Face Wasatch 20F / -7C Backpacking Sleeping Bag is a long-lasting option for camping enthusiasts. The warm yet lightweight synthetic insulation ensures that you stay comfortable without adding extra weight to your backpack. This sleeping bag is designed to be easily packed into a stuff sack, making it convenient to carry with you on your outdoor adventures.

With a temperature rating of 20-degrees Fahrenheit (-7 Celcius) and up, The North Face Wasatch 20F / -7C Backpacking Sleeping Bag is suitable for a wide range of camping conditions. The temperature limit can fluctuate depending on regional weather conditions, so it's important to be aware of the climate in your area before using this sleeping bag.

The North Face Wasatch 20F / -7C Backpacking Sleeping Bag comes in two sizes: Regular and Long. The Regular size weighs 2 lbs 15 oz (1350 g), while the Long size weighs 3 lbs 4 oz (1460 g). The maximum user height for the Regular size is 6' (183 cm), while the Long size can accommodate users up to 6'6" (198 cm) in height.

In conclusion, The North Face Wasatch 20F / -7C Backpacking Sleeping Bag is an excellent choice for those looking for comfort and warmth during their camping trips. Its quality construction, recycled insulation, and convenient features make it a must-have for any camping enthusiast.

7. North Face Eco Trail Synthetic Sleeping Bag, 20f/-7c, Tnf Blue/hemp, Reg-Rh

The North Face Eco Trail Synthetic 20F / -7C Backpacking Sleeping Bag is an ideal choice for those who love to camp in comfort. This sleeping bag is made with 100% recycled materials, making it not only durable but also eco-friendly. It is perfect for those who want to enjoy the great outdoors while minimizing their impact on the environment.

The Eco Trail Synthetic—20 features a wider cut at the knees, providing maximum comfort and mobility. The sleeping bag is filled with 50% post-consumer recycled Heatseeker synthetic insulation, which has a great warmth-to-weight ratio. The insulation can be easily packed into a stuff sack, making it easy to carry around.

The sleeping bag also features a fitted hood with a cinch-cord, a draft collar, and a zipper baffle to prevent heat loss. The extended width at the knees and the vaulted footbox add to the comfort and warmth of the sleeping bag. With a temperature rating of 20-degrees Fahrenheit (-7 Celcius) and up, this sleeping bag is perfect for camping in colder conditions.

The North Face has designed this sleeping bag with quality construction and thoughtful design. They have paid attention to every detail to ensure that the sleeping bag is warm, comfortable, and long-lasting. The Eco Trail Synthetic—20 is a camp staple that you can rely on for years to come.

The sleeping bag is available in three different sizes – Regular, Long, and Extra Long – to accommodate different body types. The Regular size weighs 3 lbs 14 oz (1756 g), the Long size weighs 4 lbs 5 oz (1959 g), and the Extra Long size weighs 4 lbs 12 oz (2150 g). The stuffsack sizes are Regular/Long: 10" x 18" (25.4 cm x 45.7 cm) and Extra Long: 11" x 20" (27.9 cm x 50.8 cm).

In conclusion, The North Face Eco Trail Synthetic 20F / -7C Backpacking Sleeping Bag is an excellent choice for those who want to camp in comfort while minimizing their impact on the environment. The sleeping bag is warm, comfortable, and durable, making it a camp staple that you can rely on for years to come.

8. Therm-A-Rest Saros 0f/-18c Synthetic Mummy Sleeping Bag, Long

The Therm-a-Rest Saros 0F/-18C Synthetic Mummy Sleeping Bag, Long is an excellent choice for anyone looking for a lightweight and comfortable sleeping bag for cold weather camping or backpacking. This sleeping bag is designed to provide warmth in temperatures as low as 0 degrees Fahrenheit, making it ideal for use in colder climates.

One of the key features of the Saros sleeping bag is its use of EraLoft synthetic fill insulation. This type of insulation is both efficient and compressible, which means that it can be packed down to a small size without sacrificing warmth. Additionally, the hollow fibers used in the insulation reduce weight, which makes the sleeping bag easier to carry on long hikes or backpacking trips.

The Saros sleeping bag also features Therm-a-Rest's W.A.R.M. fit, which stands for Additional Room for Multiple positions. This design allows for a variety of natural sleep positions while maintaining thermal efficiency, which means that you can sleep comfortably regardless of how you prefer to sleep. This feature is particularly useful for people who tend to move around a lot during the night.

Another innovative feature of the Saros sleeping bag is its use of SynergyLink Connectors. These connectors integrate the sleeping bag with a pad for optimal efficiency and comfort. This means that you won't have to worry about your sleeping pad slipping around during the night, which can be a common problem with some sleeping bags.

Finally, the Saros sleeping bag comes in a long size that measures 85x33x5.5 inches. This size is suitable for people up to 6 feet 6 inches tall, which makes it a good choice for taller individuals. The sleeping bag also comes with a storage sack and compression sack, which makes it easy to pack and transport.

In summary, the Therm-a-Rest Saros 0F/-18C Synthetic Mummy Sleeping Bag, Long is an excellent choice for anyone looking for a high-quality sleeping bag that will keep them warm and comfortable in cold weather conditions. With its efficient and compressible EraLoft synthetic fill insulation, W.A.R.M. fit, SynergyLink Connectors, and long size, this sleeping bag is a great investment for any outdoor enthusiast.

9. Teton Sports Altos-S 0f Ultralight Mummy Sleeping Bag For Camping, Hiking, Backpacking (Orange)

The TETON Sports Altos-S 0F Ultralight Mummy Sleeping Bag is a must-have for anyone who loves camping, hiking, or backpacking. This sleeping bag is designed to provide maximum comfort and warmth, while also being highly compressible and easy to carry.

One of the standout features of this sleeping bag is its roomy design. It provides more shoulder and leg room than many other mummy bags, which can be a game-changer for people who have trouble sleeping in tight spaces. The built-out footbox also provides extra room for your feet, so you can stretch out and get comfortable.

Despite its roomy design, the Altos-S 0F is still highly compressible and lightweight. This makes it easy to pack up and take with you anywhere, from your backyard to the backcountry. The sleeping bag is also water-resistant, which means you can rest easy even if the weather takes a turn for the worse.

One of the best things about the TETON Sports Altos-S 0F Ultralight Mummy Sleeping Bag is the compression sack that comes with it. This sack is specifically designed to make it easy to pack up your sleeping bag and get on the go. Simply stuff the bag in at the bottom and tighten the heavy-duty straps to compress it down to a manageable size.

At TETON Sports, they stand behind their products and are committed to providing exceptional customer service. If you have any questions or concerns about your sleeping bag, their product support team is available to help. You can count on TETON Sports to take care of you and get you back outdoors where you belong.

10. North Face Eco Trail Synthetic Sleeping Bag, 35f/2c, Regular-Right Hand, Yellow/hemp.

The North Face Eco Trail Synthetic 35F/2C Backpacking Sleeping Bag in TNF Yellow/Hemp, Regular-Right Hand, is the perfect choice for campers who want to sleep comfortably under the stars. This sleeping bag is made with 100% recycled materials and features a wider cut at the knees, providing ample room for mobility and comfort during sleep.

The bag's 50% post-consumer recycled Heatseeker synthetic insulation offers a great warmth-to-weight ratio and can be easily packed into a stuff sack, making it a practical and efficient choice for backpackers. The insulation provides warmth without adding extra weight, making it a durable and long-lasting camping staple.

The Eco Trail Synthetic 35F/2C is designed with several features aimed at ensuring maximum comfort during sleep. The fitted hood with a cinch-cord, draft collar, and zipper baffle prevent heat loss, while the extended width at the knees allows for maximum comfort and mobility. The vaulted footbox provides added warmth and comfort to ensure a restful night's sleep.

This sleeping bag is perfect for temperatures as low as 35-degrees Fahrenheit (2 Celsius) and up, making it an ideal choice for camping in a variety of weather conditions. However, it is important to note that the temperature limit can fluctuate depending on regional weather conditions.

The sleeping bag weighs in at just 2 lbs 7 oz (1106 g) for the regular size and 2 lbs 12 oz (1246 g) for the long size, making it easy to pack and carry on camping trips. The stuff sack size measures 8.5" x 15" (21.59 cm x 38.1 cm), making it easy to store and transport.

Overall, the North Face Eco Trail Synthetic 35F/2C Backpacking Sleeping Bag is a high-quality product that provides comfort, warmth, and durability. Its eco-friendly materials and thoughtful design make it an ideal choice for outdoor enthusiasts who want to enjoy nature while minimizing their environmental impact.

Best Synthetic Sleeping Bag For Backpacking FAQs

What are the advantages of using a synthetic sleeping bag for backpacking over a down sleeping bag?

A synthetic sleeping bag offers several advantages over a down sleeping bag for backpacking. First, synthetic sleeping bags are generally less expensive than down sleeping bags. Second, synthetic insulation performs better in wet conditions, as it retains its insulating properties when wet, whereas down loses its insulating properties when wet. This makes synthetic bags ideal for backpackers who may encounter wet weather or high humidity. Third, synthetic bags are typically easier to care for and can be machine washed and dried. Finally, synthetic bags are hypoallergenic, making them a better choice for people with allergies or sensitivities to down. Overall, a synthetic sleeping bag is a more practical and versatile choice for backpackers who want to ensure warmth and comfort in a variety of weather conditions.

What are the best brands of synthetic sleeping bags for backpacking?

When it comes to synthetic sleeping bags for backpacking, some of the best brands include:

1. The North Face: Known for their high-quality outdoor gear, The North Face offers a range of synthetic sleeping bags that are lightweight and compressible, making them ideal for backpacking.

2. Marmot: Another popular brand for outdoor gear, Marmot offers synthetic sleeping bags that are designed to provide warmth and comfort in a variety of conditions.

3. Mountain Hardwear: Mountain Hardwear is known for their innovative outdoor gear, and their synthetic sleeping bags are no exception. They offer a range of bags designed for different temperatures and activities.

4. Therm-a-Rest: Therm-a-Rest is a well-known brand for sleeping pads, and they also offer a range of synthetic sleeping bags that are designed to be lightweight and packable.

5. REI Co-op: REI Co-op is an outdoor retailer that offers their own line of gear, including synthetic sleeping bags. Their bags are designed to provide warmth and comfort while also being affordable.

What are the most lightweight and compact synthetic sleeping bags for backpacking?

The most lightweight and compact synthetic sleeping bags for backpacking are those made with high-quality synthetic insulation, such as Primaloft, Thermolite, or Climashield. These types of insulation are designed to be both lightweight and compressible, making them ideal for backpacking trips where space and weight are at a premium.

Some of the best options on the market include the Therm-a-Rest Hyperion 20, which weighs just over a pound and compresses down to the size of a water bottle, and the NEMO Forte 20, which uses Primaloft insulation and packs down to a similar size. Other top-rated options include the Mountain Hardwear Lamina Eco AF 30 and the Kelty Cosmic Synthetic 20.

When choosing a synthetic sleeping bag for backpacking, it's important to consider factors such as temperature rating, weight, and packability. Look for options that are designed specifically for backpacking and that offer a good balance of warmth, weight, and compressibility.

What are the top features to look for when choosing the best synthetic sleeping bag for backpacking?

When choosing the best synthetic sleeping bag for backpacking, there are several features to look for. First, consider the temperature rating and insulation type to ensure the bag is suitable for the expected weather conditions. Look for a bag with a compressible and lightweight design to minimize bulk in your backpack. The shape and size of the bag should also be considered to ensure it fits your body comfortably and allows for sufficient movement. Other features to look for include a durable and water-resistant outer shell, a hood to keep your head warm, and a draft collar to prevent heat loss. It's also important to consider the brand reputation and customer reviews to ensure the bag is high quality and reliable.

What is the temperature rating range of the best synthetic sleeping bags for backpacking?

The temperature rating range of the best synthetic sleeping bags for backpacking varies depending on the manufacturer and intended use. Generally, these sleeping bags have a temperature rating range of 0°F to 50°F (-18°C to 10°C). This range is suitable for backpacking in most conditions, including cold weather.

The temperature rating of a synthetic sleeping bag is determined by the amount of insulation it has, which is measured in grams per square meter. The higher the insulation, the warmer the sleeping bag will be. However, this also means the sleeping bag will be heavier and bulkier to carry.

When choosing a synthetic sleeping bag for backpacking, it is important to consider the expected temperature conditions and the weight and packability of the sleeping bag. A sleeping bag with a temperature rating that is too low or too high can result in discomfort and potentially dangerous situations.

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