Good choice for Alaskan and Canadian Rockies' climbs. Temp Rating: -20 degrees F / -29 degrees C Reg. Weight (US/Metric): 4lb 4 oz/1931grams Fits to: (Reg) 6' 0 in. / 183cm; (Long) 6' 6 in. / 198cm Shape: Wide Mummy w/collar Zip Option: Left and right zip Material: Shell: Aerolight MemBrain N-150R Lining: Gossamer Micro N-130 WR finish Insulation: 800+ Fill Goose Down Features: 9-baffle chest section Nautilus 6-baffle hood 11-baffle foot box Hidden draft tube pocket Reinforced foot box lining Stretch tricot baffles Velcro-free face muff Velcro free down-filled collar in.Feely in. draw cords Zipper guards Down-filled draft tube Ground-level side seams Stuff sack and storage sack included