- Climb into the bag via the large oval opening on top; the oversize comforter seals up the opening so you can sleep comfortably no matter your position: back, side or stomach
- With a European Norm (EN) lower-limit rating of 27°F, the Backcountry Bed 600 2 -Season sleeping bag is suitable for spring and summer backpacking
- On warmer nights, flip the comforter outside the sleeping bag and tuck it back for ventilation; insulated hand/arm pockets provide warmth when the comforter is outside the bag
- Down is considered the best insulation available but when wet, it quickly loses loft and the ability to keep you warm; 600-fill-power DriDown is treated to resist moisture
- Proprietary process treats each individual duck down plume with a molecular-level polymer so the down stays dry longer, lofts better and dries faster than untreated down
- DriDown insulation stays dry 10 times longer, retains 170% more loft when exposed to moisture and dries 33% faster than untreated down
- Ripstop polyester exterior endures frequent use in the outdoors; polyester taffeta lining is soft and comfortable next to skin
- Sleeping pad sleeve on the bottom of the bag secures your pad (pad not included) to create the experience of a fully integrated bed
- Sierra Designs Backcountry Bed 600 2-Season Sleeping Bag comes with a stuff sack and storage sack
Imported.
Many sleeping bags are rated for temperature by an independent testing protocol. REI and the broader industry now use the International Organization for Standardization (ISO) 23537 protocol, which improves on the older European Norm (EN) 13537 standard; you may still see older items in our assortment that were only EN tested. With either protocol, each bag gets a Comfort (or T-Comfort) rating and Lower Limit (or T-Limit) rating. 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. Ratings are based on a person wearing one long underwear layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38. Many brands use the Comfort rating for women's bags and the Lower Limit rating for men's and unisex bags. Everyone's body and sleep comfort differ, and conditions of use (posture, clothing, sleeping pad R-value, wind, humidity, etc.) affect total insulation, so EN and ISO ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth.
View all Sierra Designs Men's Sleeping Bags