At just 1 lb 3 oz., the SummerLite is the lightest bag we make in a continuous baffle construction. Our goal in designing this bag was to make it as light as possible without eliminating key features or function. The result is a fully-baffled bag that weighs only 19 ounces and features a full-length zipper with insulated draft protection! The SummerLite is a dream come true for lightweight backpacking fanatics. Features Full-length #5 YKK Zipper Insulated Draft Tube 4" Loft, 32Adeg F 5 1/4" Spacing/Continuous Baffles 10 oz. Down Fill 59"/38" Shoulder/Foot Girth 1 lb. 3 oz. Total Weight Tech Specs SHAPE SIZE (ft/in) RATING LOFT (FT/IN) INSIDE GIRTH SHDR/HIP/FOOT (IN) FILL WT. TOTAL WT. STUFF SIZE (IN) MUMMY 5&';6" 32F 4" 59"/51"/38" 8OZ 1LB 2OZ 6"X12" MUMMY 6&'; 32F 4" 59"/51"/38" 9OZ 1LB 3OZ 6"X12" MUMMY 6&';6" 32F 4" 60"/52"/38" 10OZ 1LB 5OZ 6"/12"