Packs remarkably small in an integrated stuff sack that won’t get lost. 3-inch I-beam baffled air cell adds weightless structure that cradles the head and eliminates any “balloon” feeling. Wider dimensions add more comfort on the trail, at a negligible weight increase. 100% post-consumer recycled Zerofiber insulation creates a plush, cushiony feel. Removable, machine-washable recycled fabric cover is super-soft to the touch.