The 15 Best Synthetic Backpacking Sleeping Bag You Should Know About Use 2023

CAMP IN COMFORT. The Eco Trail Synthetic—35F is a light, durable and versatile sleeping bag. Proudly made with 100% recycled materials and featuring a wider cut at the knees, this is the perfect place to spend your nights in the great outdoors.

QUALITY CONSTRUCTION. Our 50% post-consumer recycled Heatseeker synthetic insulation has great warmth to weight ratio and can be easily packed into a stuff sack. Warm yet lightweight synthetic insulation makes this long lasting sleeping bag a camp staple.

THOUGHTFUL DESIGN. Slip into a carefully crafted bag offering a fitted hood with cinch-cord, draft collar and zipper baffle that prevent heat loss, extended width at the knees for maximum comfort and mobility, and a vaulted footbox for added warmth.

KEEP WARM. With a temperature rating of 35-degrees Fahrenheit (2 Celcius) and up, this sleeping bag will keep you warm and comfortable at the campsite. Please note: the temperature limit can fluctuate depending on regional weather conditions.

TECH SPECS. Weight: Regular: 2 lbs 7 oz (1106 g). Long: 2 lbs 12 oz (1246 g). Stuffsack Size: 8.5" x 15" (21.59 cm x 38.1 cm).

Loaded with FEATURES for two: independent ventilation, fully removable zip off top layer, two built in blankets, two way zip foot vents, oversized Hood large enough to fit 2 standard pillows from home.

Cloud loft insulation: compressible, quick drying, and ultra-soft. Lightweight cloud loft fill provides warmth in three seasons under the stars with a comfortable price tag. The bag liner and shell are made from silky smooth 75D poly Taffeta.

Wider than a queen side bed: room to snooze, or snuggle, 64 inches of shared shoulder space, 84 inches of total length. Go ahead, roll around in your sleep.

Perfect for couples: no need for separate bags or blankets for Bae. Stay warm, get hot, and cool off in comfort and style.

Family camping favorite in true comfort: large enough to comfortably snuggle up with first time campers in the great outdoors without overheating mom or dad. Customized temperature options keep everyone cozy until your little one wakes up at the crack of dawn.

Stuff sack included

the dark night: limited run dark shadow colorway, 20 degree temp rating, long size: fits sleepers up to 6ft 6in, fill weight 33oz, total weight 3lbs, stuff size (non-compressed) 16x9. 5 inches

packability: integrated compression stuff sack, coupled with the premium packability of the synthetic fill allow the cosmic synthetic to reach minimalist standards of backpacking gear. trail weight varies by temp rating, from 2lbs 6oz to 4lbs 11oz.

insulation: cirroloft synthetic insulation provides reliable warmth in cold and damp conditions, maintains loft for even coverage with no cold spots. temperature ratings from 0 degrees to 40 degrees, to ensure your time on the trail is comfortable.

tailored fit: natural fit spacious footbox gives more room to wiggle your toes, and length options range to fit sleepers 5’8” to 6’6”. a handy stash pocket on the exterior of the bag for your overnight goodies and essentials in the tent.

kelty craftmanship: kelty is synonymous with quality in the outdoor community. 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.

two way zipper: no need to overheat at night, two way zipper provides on demand foot vent, and room to wiggle.

Sport type: Camping & Hiking

Care instructions: Hand Wash

0 Degree Temp Rating, Long Size: Fits sleepers up to 6ft 6in, fill weight 60oz, total weight 4lbs 11oz, stuff size (non-compressed) 17x11 inches. Color: Fired Brick Red/Smoke

Packability: Integrated compression stuff sack, coupled with the premium packability of the synthetic fill allow the Cosmic synthetic to reach minimalist standards of backpacking gear. Trail weight varies by temp rating, from 2lbs 6oz to 4lbs 11oz.

Insulation: Cirroloft synthetic insulation provides reliable warmth in cold and damp conditions, maintains loft for even coverage with no cold spots. Temperature ratings from 0 degrees to 40 degrees, to ensure your time on the trail is comfortable.

Tailored Fit: Natural fit spacious footbox gives more room to wiggle your toes, and length options range to fit sleepers 5’8” to 6’6”. A handy stash pocket on the exterior of the bag for your overnight goodies and essentials in the tent.

Kelty Craftsmanship: Kelty is synonymous with quality in the outdoor community. 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.

40 Degree Temp Rating, Regular Size: Fits sleepers up to 6ft, fill weight 24oz, total weight 2lbs 6oz, stuff size (non-compressed) 15x8 inches. Color: Duffel Bag Green/Smoke

Packability: Integrated compression stuff sack, coupled with the premium packability of the synthetic fill allow the Cosmic synthetic to reach minimalist standards of backpacking gear. Trail weight varies by temp rating, from 2lbs 6oz to 4lbs 11oz.

Insulation: Cirroloft synthetic insulation provides reliable warmth in cold and damp conditions, maintains loft for even coverage with no cold spots. Temperature ratings from 0 degrees to 40 degrees, to ensure your time on the trail is comfortable.

Tailored Fit: Natural fit spacious footbox gives more room to wiggle your toes, and length options range to fit sleepers 5’8” to 6’6”. A handy stash pocket on the exterior of the bag for your overnight goodies and essentials in the tent.

Kelty Craftsmanship: Kelty is synonymous with quality in the outdoor community. 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.

CAMP IN COMFORT. The Youth Eco Trail Synthetic 20-degree sleeping bag is proudly made with 100% recycled materials and features an embossed lining for enhanced aesthetic appeal.

RECYCLED INSULATION. Our 50% post-consumer recycled Heatseeker synthetic insulation has great warmth to weight ratio and can be easily packed into a stuff sack. Warm yet lightweight synthetic insulation makes this long lasting sleeping bag a camp staple.

THOUGHTFUL DESIGN. Slip into a carefully crafted bag offering a fitted hood with cinch-cord, draft collar and zipper baffle that prevent heat loss, extended width at the knees for maximum comfort and mobility, and a vaulted footbox for added warmth.

KEEP WARM. With a temperature rating of 20-degrees Fahrenheit (-7 Celcius) and up, this sleeping bag will keep you warm and comfortable at the camp site. Please note: the temperature limit can fluctuate depending on regional weather conditions.

TECH SPECS. Weight: 3 lbs (1353 g). Stuffsack Size: 9" x 16" (22.86 cm x 40.64 cm).

30-degree Fahrenheit (-10-degree Celsius) synthetic sleeping bag for 2-season backpacking and travel; relaxed mummy shape features shaped hood and zipper draft tubes for warmth

Synthetic polyester insulation uses WaveLoft construction to maximize loft, expanding the insulation to trap warm air

30D nylon shell with DWR treatment; YKK zippers with full-length left-side zip with two sliders for ventilation and versatility; can be fully unzipped for use as a quilt

Relaxed mummy shape offers room to sleep comfortably; removable straps on the underside attach to a sleeping pad

Long size bag has a max user height of six feet six inches; bag weighs 2.6 pounds; compresses to 9.3 liters with included compression sack

Car Camping Champion: new for 2020, the Kelty Kush 30 degree synthetic sleeping bag is your new go-to for camping in comfort, while meeting your high aesthetic standards.

3-in-1 Versatility: the Kush is equal parts car camping sleeping bag, campsite or cabin comforter, and ready for a snooze at a moment’s notice pillow. The unique pillow case style stuff sack makes this bag useful even when it’s all packed up.

Quilted Stitch Pattern: Cozy Cloudloft insulation is kept in place and lofted like your favorite bedroom pillow thanks to the unique stitch pattern, which eliminates cold spots and maximizes campsite comfort.

Room to Wiggle: Rectangular shape, natural fit footbox, and wide top opening provide ample room for your night moves. A hefty 43oz (regular size) to 46oz (long size) of insulation will keep you draped in comfort from head to toe.

Kelty Craftsmanship: Kelty is synonymous with quality in the outdoor community. Kelty gear is built for play, and built to last. The Kush is ready to be put through the ringer on the trail, campground, and everywhere in between.

Dimensions: Regular fits to 6ft, total weight 4lb 6oz, stuffed size 30x16in. Long fits to 6ft 6in, total weight 4lb 11oz, stuffed size 30x16in.

25-degree Fahrenheit (-4-degree Celsius) synthetic sleeping bag for 2-season backpacking; mummy style features shaped hood, draft collar, and zipper draft tubes

Thermolite insulation has a proprietary blend of hollow-core fibers for lightweight warmth and compressibility; WaveLoft construction maximizes loft, expanding the insulation to trap warm air

30D nylon shell with DWR treatment; YKK zippers with full-length left and right-side zips, and footbox zip for ventilation and versatility; can be unzipped for use as a quilt

Generous mummy shape offers room to move; can be zipped to a Sea to Summit Altitude, Journey, or Venture sleeping bag

Regular size bag has a max user height of six feet; bag weighs 2.5 pounds; compresses to 7.3 liters with included 70D nylon compression sack

Think Outside: Whether you're road tripping or backpacking, there's never a reason to sacrifice quality sleep over dependable camping gear. The Synthesis 20, our do-it-all sleeping bag that combines our SierraLoft synthetic insulation with lightweight, durable materials that are typically reserved for more premium sleeping bags. Its dual, anti-snag zipper system makes adjustments easy, and a draft collar along the zipper prevents uncomfortable cold spots from touching your skin.

Features: Synthetic insulation provides lofty warmth, even when wet | Patented self-sealing foot vents for fast and easy ventilation | Cinching hood locks in heat at the head (and doubles as a barrier when your pillow likes to run away) | Dual zipper system for ease of use | 20D nylon fabric for lightweight versatility

Specs: EN Limit Temp Rating: 20F / -6C | EN Comfort Temp Rating: 31F / 0C | Fill Weight: 28.7oz / 814g | Minimum Weight: 2lb 9oz / 1161g | Fits Up To: 6' 0" / 183 cm | Length: 76in / 193 cm | Shoulder Circumference: 62" / 152 cm | Hip Circumference: 56" / 142 cm | Footbox Circumference: 40" / 102 cm | Mesh Stoarge Bag Size (LxW): 20 x 12" / 51 x 31 cm | Stuff Sack Size (L x W): 15 x 7.5" / 38 x 19cm

Materials: Insulation: SierraLoft Synthetic | Shell Fabric: 20d Nylon Ripstop | Liner Fabric: 20d Nylon Taffeta

Warranty: Limited Lifetime Warranty – When purchased from an authorized retailer, Sierra Designs products are warranted to the original purchaser against manufacturing defects in materials and workmanship for the lifetime of the product. Contact our Customer Service team for prompt service or to answer any questions.