Features Integrated full pad sleeve. Never roll off your pad again DownTekTM water repellent down insulation Rectangular shape offers more room in foot box and shoulders Ergonomic hood design allows for more range of motion while staying hooded FlowTM Construction: Insotect FlowTM is a flow-optimized insulation system that delivers uniform heat distribution and natural body contouring through its revolutionary baffle design. Flow Construction eliminates lateral and vertical down shifting by using vertical chambers with Flow Gates to regulate fill positioning and density. Strategically placed Flow Gates minimize vertical down shifting while vertical chambers minimize lateral shifting. With continuous vertical Flow chambers in place of tr Description Product Description Updated for 2015, the Classic Down series offer warmth, compressibility and the Big Agnes System bag design. The Storm King combines a roomier contour shape with a narrower pad sleeve to provide an overall more comfortable and cozier sleeping experience than ever before. Big Agnes also redesigned the bag to be taller across the top so you can roll over more freely (side sleepers rejoice!). The ergonomic hood gives you more range of motion so that you can move unrestricted while staying hooded. Oh yes, Big Agnes truly is the mother of comfort. Key Features of the Big Agnes Storm King 0 Sleeping Bag: Integrated full pad sleeve. Never roll off your pad again DownTekTM water repellent down insulation FlowTM Construction: Insotect FlowTM is a flow-optimized insulation system that delivers uniform heat distribution and natural body contouring through its revolutionary baffle design. Flow Construction eliminates lateral and vertical down shifting by using vertical chambers with Flow Gates to regulate fill positioning and density. Strategically placed Flow Gates minimize vertical down shifting while vertical chambers minimize lateral shifting. With continuous vertical Flow chambers in place of traditional side seams, Flow bags eliminate potential cold spots which can occur with side seams. Vertical baffles now flow with your body for more rapid and uniform body heat distribution. Rectangular shape offers more room in foot box and shoulders Ergonomic hood design allows for more range of motion while staying hooded Mesh storage sack & nylon stuff sack included Interior fabric loops for sleeping bag liners 70" YKK #8 zipper. Mate together our left and right zip bags with same size zipper No-draft collar seals around neck to keep cold air from sneaking in No-draft wedge insulates the connection between the bag and pad No-draft zipper tube insulates along the len