Western Mountaineering Ultralite 20 Degree

If your summer bike tour is going to take you through different climates then the UltraLite is a good choice. With a 59″ shoulder girth this efficient bag is good to 20°. The full down collar helps to seal in heat around your neck without adding excess bulk, and 16 oz. of high lofting down pumps this bag to 5″. The total weight of this very compressible package is only 1 lb. 13 oz. Features Full-length #5 YKK Zipper Full Down Collar 5 1/4″ Spacing/Continuous Baffles 59″/38″ Shoulder/Foot Girth 5″ Loft, 20° F 16 oz. Down Fill 1 lb. 13 oz. Total Weight Tech Specs   SHAPE SIZE (FT/IN) RATING LOFT (IN) INSIDE GIRTH  SHDR/HIP/FOOT (IN) FILL WT. TOTAL WT. STUFF SIZE (IN) MUMMY (W/ FULL COLLAR) 5'6" 20F 5.5" 59"/51"/38" 15OZ 1LB 12OZ 7"X13" MUMMY (W FULL COLLAR) 6' 20F 5.5" 59"/51"/38" 16OZ 1LB 13OZ 7"X13" MUMMY (W/FULL COLLAR) 6'6" 20F 5.5" 60"/52"/38" 17OZ 1LB 15OZ 7"X13"