- RDS-certified, 650+ fill-power duck down with a non-PFAS Ultra-Dry Down treatment to stay drier in damp conditions
- Lightweight 20-denier recycled polyester shell with a non-PFAS durable water repellent (DWR) finish to protect against wind and moisture
- 20-denier recycled polyester liner for greater comfort
- Free-Flow+ Zip System provides excellent temperature regulation and multiple sleeping bag configurations
- Relaxed semi-rectangular fit; for even more space, you can zip 2 Basecamp sleeping bags together as a double or unzip the upper section for use as a quilt
- Box baffle construction with vertical chest baffles in the torso for reduced down movement
- Oversize hood with adjustment cords has space for your favorite pillow from home
- Stuff sack included
- Sea to Summit Guarantee is offered for the lifetime of this product
Imported.
Temperature ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth, since many different factors contribute to your comfort while you sleep. Backpacking bags are typically rated for temperature according to an independent testing protocol—currently International Organization for Standardization (ISO) 23537, though some older items followed European Norm (EN) 13537. Testing is based on a person wearing one base layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38.
Each bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
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