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Sierra Designs Nitro 35°F Sleeping Bag

Nitro 35°F Sleeping Bag

Regular price $199.95 USD
Regular price $299.95 USD Sale price $199.95 USD
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Simple construction and a classic mummy bag shape are the hallmarks of one of Sierra Designs' best-selling sleeping bags for backpackers who put a premium on low weight, incredible comfort, and straightforward tech.

The Nitro 35 sleeping bag is designed with durable nylon ripstop and insulated with 800-fill, hydrophobic DriDown to keep you toasty warm, even on damp nights. A draft collar seals in the heat when moving around, and sidewall baffles prevent the down from shifting and causing cold spots, but our patented self-sealing foot vent provides relief to hot sleepers without the need to kick off the covers. Top it off with an anti-snag zipper to eliminate sleepy struggles and take greater comfort with this intuitive mummy bag.



  • Sleeping bag to keep you toasty warm, even in wet or inclement conditions
  • Insulated with 800-fill, hydrophobic DriDown
  • Patented self-sealing foot vent for fast and easy ventilation without leaving bag
  • Draft-dodger collar helps prevent drafts
  • 5" baffle spacing and side wall baffles helps to keep down from shifting, keeping you warmer
  • Anti-snag zipper tracks for easy in and out
  • Includes stuff sack and mesh storage bag
 Shape  Mummy
 Temp Rating  27°F / -3°C
 Fill  800FP PFC-Free Dridown
 Fill Weight

 255 g / 9 oz

 Shell and Lining

 15D nylon ripstop


 Reg: 198 cm / 78 in

 Long: 213 cm / 84 in

 Bag Size

 Reg: Fits up to 183 cm / 72 in

 Long: Fits up to 198 cm / 78 in

 Dimensions (shoulder-hip-foot)

 Reg: 157 - 142 - 102 cm / 62 - 56 - 40 in

 Long: 163 - 147 - 107 cm / 64 - 58 - 42 in

 Stuff Sack Size

 Reg: 33 x 18 cm / 13 x 7 in

 Long: 33 x 18 cm / 13 x 7 in


 Reg: .61 kg / 1 lb 6 oz

 Long: .67 kg / 1 lb 8 oz


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