Sierra Designs BTU-5 Sleeping Bag: Down Review

Sierra Designs BTU-5 Sleeping Bag: Down Review

Sierra Designs BTU-5 Sleeping Bag: Down Review

Heading out the door? Read this article on the new Outside+ app available now on iOS devices for members! Download the app.

Not that you’d need it, with 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.

Trending on Outside Online

sms