Western Mountaineering UltraLite

short regular long Weight 1 lb 12 oz / 790 g 1 lb 13 oz / 820 g 1 lb 15 oz / 870 g Fill weight 15 oz / 425 g 1 lb 0 oz / 450 g 1 lb 1 oz / 480 g Loft 5 in / 12.5 cm 5 in / 12.5 cm 5 in / 12.5 cm Temperature rating 20 F / -7 C 20 F / -7 C 20 F / -7 C Fill 850 fill-power down 850 fill-power down 850 fill-power down Shape Mummy Mummy Mummy Max user height 5 ft 6 in / 165 cm 6 ft 0 in / 180 cm 6 ft 6 in / 200 cm Shoulder girth 59 in / 150 cm 59 in / 150 cm 60 in / 152 cm Hip girth 51 in / 130 cm 51 in / 130 cm 52 in / 132 cm Foot girth 38 in / 97 cm 38 in / 97 cm 38 in / 97 cm