Technology to Withstand the Elements - Stay warm even in wet weather with state of the art SpiraFil high-loft insulation Durable Fabric - The perfect all-purpose synthetic bag for backpacking, trekking, or mountaineering Comfort Meets Design - Stay warm and comfortable with the anatomical 3D Footbox plus wave construction top and blanket construction bottom Stash Your Gear - Stow valuables with locking YKK two-way zipper and compression stuff sack Marmot crafts professional quality outdoor gear, born from working mountain guides and instructors. Inspired by the Alpinist spirit of adventure to search and achieve in a harsh world, our products are simple, appropriate, dependable and good looking.