Sierra Designs Nitro 20 Womens 800 Dridown Sleeping Bag

The Sierra Designs Nitro 20 Women's 800 DriDown is a classic mummy bag tuned for women, packing the same premium down into a shorter, women's-specific cut for extra warmth. Built for backpackers who want low weight and dependable tech, it is insulated with 800-fill-power, hydrophobic PFC-free DriDown and wrapped in ultralight 15-denier nylon ripstop to keep you warm even on damp nights.

A draft collar seals in heat, while 5-inch baffle spacing and sidewall baffles stop the down shifting and forming cold spots. The patented self-sealing foot vent gives warmer sleepers relief without kicking off the covers, and an anti-snag zipper makes getting in and out easy.

Key Features

• Women's-Specific Design - Shorter cut with a higher density of down for warmth
• 800FP PFC-Free DriDown - Hydrophobic down that stays warm even when damp
• Ultralight 15D Nylon - Just 0.98kg minimum weight
• Draft Collar - Seals in heat as you move
• Sidewall and 5in Baffles - Stop down shifting for even warmth
• Self-Sealing Foot Vent - Fast, easy ventilation for warmer sleepers
• Anti-Snag Zipper Tracks - Easy in and out
• Classic Mummy Shape - Efficient warmth for backpacking

Ideal For

• Women Backpackers - Warmth and fit tuned for women
• Colder 3-Season Nights - EN comfort -4°C, limit -10°C
• Damp Conditions - Hydrophobic DriDown
• Fast and Light Trips - Packs down small at 0.98kg

Technical Specifications