The Nitrous sleeping bag is the perfect when every gram counts. Designed for superior performance in summer or shoulder seasons. The mummy shape is generous, and filled with 800-850 loft Hydrophobic Down Non PFC, in a box wall baffle construction. Incredibly compact, It’s available in three temperatures, rated to the lower limit for both males (M) and females (F): +2 M (+9 F) °C or -1 M (+4 F) °C or -3 M (+3 F) °C tested in accordance with ISO 23537.1. The Nitrous is available in small, regular and large sizes. The lightweight downproof by construction 10 D Vapour Vent V2 fabric offers excellent breathability, comfort and Non PFC water repellence. The full–length YKK #5 locking zip has an anti-snag slider and opens at both ends, allowing extra ventilation. Features Intended use: lightweight bushwalking, bike/backpacking Temperature rating: independently tested in accordance with ISO 23537-.1 Available sizes: short, regular, large Shape: Zip foot, tapered rectangular Baffle construction: Vertical-V baffle system (vertical/V-baffles) with, box wall construction Zip: YKK #5 with locking slider and anti-snag cover Zip configuration: full-length zip Zip side: Small all in RH; regular available with RH or LH; large with LH When lying on your back in a sleeping bag: a left or LH zipper is on your left side, a right or RH is on your right side. Fabric: 10-denier Vapour Vent V2. Downproof by construction, highly breathable, Non PFC water repellent treatment Down loft: 800-850 loft, tested by the IDFL Down distribution: 55% top, 45% bottom Down treatment: DWR Non PFC (hydrophobic down) Booster compatible: Quest pro series boosters (view instructions) Compression stuff sack: included (view instructions) Storage bag: included Hanging loops: Yes, located at the footbox