Remember the trapezoid from high school geometry? Turns out, this funky ol' shape is ideal for helping sleeping bags retain heat. Our trapezoidal baffle construction is just one of the reasons the Cosmic Down is still our favorite three-season superstar. We also love the expanded natural-fit footbox for happier feet, zippered stash pocket, fully recycled fabrics, and PFAS-free DWR treatment. The Cosmic Down is the total package.RegularFits to: 6' 0" / 183 cmWeight: 4.34 lb. / 1.93 kgFill weight: 39.5 oz. / 1120 gStuff Sack Size: 10" x 19" / 25 x 48 cmLength: 78 in / 199 cmShoulder Circumference: 62 in / 158 cmHip Circumference: 57 in / 147 cmFoot Circumference: 46 in / 117 cmLongFits to: 6' 6" / 198 cmWeight: 4.5 lb. / 2.04 kgFill weight: 41.6 oz. / 1178 gStuff Sack Size: 10" x 18" / 25 x 48 cmLength: 84 in / 214 cmShoulder Circumference: 64 in / 163 cmHip Circumference: 60 in / 152 cmFoot Circumference: 52 in / 131 cm