Cosmic Synthetic 20
Best synthetic sleeping bag for budget conscious campers.
Designed for three-season backpacking, this mummy bag balances warmth and weight using advanced synthetic insulation. The soft-touch shell and spacious footbox prioritize comfort during long nights on the trail, while the compressible design ensures it packs down efficiently for your pack. Featuring a dedicated stash pocket for essentials and a PFC-free water-resistant finish, it provides reliable performance in varied outdoor conditions. This bag is an ideal choice for hikers seeking a dependable, easy-to-maintain sleep system that offers excellent value without compromising on essential features or durability for backcountry adventures.
$109.95
More Cosmic Options
Owner Satisfaction
4.5
/ 5
Category Rank
1010
/ 2020
#1010 in Sleeping Bags
Price vs Category Average
-34%
Below average
ISO Temp Rating (Limit)
226
/ °F / -°C
Who it's for
- Campers and backpackers facing humid or potentially rainy environments.
- Budget-conscious adventurers seeking a versatile sleeping bag for varied conditions.
- Outdoor enthusiasts prioritizing longevity and straightforward gear maintenance.
- Sleepers who value comfort and ease of use in their outdoor accommodations.
Who should skip it
- Ultralight backpackers and those with limited pack space.
- Long-term users expecting consistent warmth performance over many seasons.
- Performance-driven individuals prioritizing minimal weight for maximum warmth.
Key Specs
ISO Temp Rating (Limit)
22°F / -6°C
Total Weight
2.83 lbs
Insulation
CirroLoft Synthetic
Shell Material
380T Nylon Taffeta
Lining Material
50D 300T Poly Taffeta
Max User Height
78 inches
Has Stash Pocket
Yes
Water Resistant
Yes
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