The Drift 20 Semi Rec sleeping bag from Brooks Range Mountaineering is designed for adventurers that would like a little more room in their bag, with 66 across the shoulders and 48 around the footbox this bag gives you room to breathe. The 19oz of 850 fill power DownTek down will keep you toasty warm down to 20 degrees. A 2nd zipper around the footbox allows the bag to fully unzip and lay flat. The Halo Neck Collar traps all your body heat inside the bag while not allowing any cold air in that might disturb your night's sleep. All Brooks Range sleeping bags are design for one goal, To keep you comfortable while sleeping. Our bags have a streamed line design, we only add features that help increase the bag warmth.