Until recently hunters going on long hunts were taking a risk by packing a down sleeping bag. If that sleeping bag got wet the down would clump and the once fluffy bag would turn into a sack of wet feathers. All that changed with the advent of water resistant down. This nano-polymer coats each individual down cluster, making a down sleeping bag or jacket water resistant from its most integral parts. The Phantom 15 sleeping bag takes advantage of Q.Shield, 800-fill water resistant down, with its superior weight to warmth ratio, compressibility and overall feather light weight of 2 pounds 1 ounce. The Phantom also boasts a smart design. Each of the baffles is limited to 5 inches in width, limiting insulation shift and maximizing loft. The hood, a critical area for comfort and heat retention, also shows signs of careful planning. The hood is made up of 6 chambers and has an ergonomic collar to limit the influx of cooler air from the outside. If you are planning a walk in hunt or just like a lightweight pack the Phantom is the bag for you.