Outside- BTU -5
November 1, 2010
Sierra Designs' BTU -5 sleeping bag
An 800-fill down heat factory with one of the best heat-sealing hoods we've ever tested and a waterproof-breathable fabric.

Sierra Designs' BTU -5 sleeping bag
An 800-fill down heat factory with one of the best heat-sealing hoods we've ever tested and a waterproof-breathable fabric.
