Loft for days - Western Mountaineering Bison GWS -40 Sleeping Bag

This sleeping bag is a down filled dream. The construction is top notch, what you would expect from an polar expedition level sleeping bag. You will notice right off this bag doesn't feel like your typical down sleeping bag. The materials are far more robust, instilling confidence that you wont tear or damage this bag under normal use like most light weight systems. Given the temp rating, size, heavy duty materials and build quality this sleeping bag doesn't come give the impression of being overly heavy to carry. Outstanding build quality and craftsmanship, everything I expected Western Mountaineering.