Big & Tall size designed for adults up to 6 ft. 5 in. Coletherm insulation keeps you warm in temperatures as low as 20°F Contour shape with cinched hood provides a headrest with more comfort and warmth J-zipper for ventilating footbox on warmer nights Sleeping bag packs into compressible stuff sack Thermolock draft tube prevents heat loss through the zipper ZipPlow patented zipper design prevents snags so bag is easy to open and close Cozy Foot soft fleece footbox and Comfort Cuff material for softness and protection around the face Dimensions are 36 x 85 in.