Find invaluable, innovative warmth and a valuable price with the backpacking friendly Spike Lake Sleeping Bag by Big Agnes. Down insulation ensures lofty warmth without the weight, as well as the compact convenience that backpackers need. Big Agnes treated the down with DownTek to retain its lofty warmth in moisture riddled environments, and the shell has a water resistant treatment to shed liquids for even more protection. Big Agnes styled the Spike Lake with a weight saving mummy shape, and the contoured hood has a drawcord to ensure a snug fit as well. There are draft tubes around the collar and inside the full length zipper to seal out winds. This sleeping bag also has internal loops for a liner and external loops for hanging to air out. Big Agnes includes a stuff sack for the pack and a storage sack for the garage.