A classic mummy shape and simple construct are hallmarks of the long-length Sierra Designs Nitro 20 sleeping bag. It’s made for backpackers who value low weight, high comfort and straightforward tech.
Features
- Designed with durable 15-denier ripstop nylon and insulated with PFC-free, hydrophobic DriDown™ 800-fill-power down to keep you toasty warm, even on damp nights
- A draft collar seals in the heat when moving around, and 5 in. baffle spacing and sidewall baffles prevent the down from shifting and causing cold spots
- Patented self-sealing foot vent provides relief to hot sleepers without the need to kick off the covers
- Anti-snag zipper eliminates sleepy struggles and makes it easy to get in and out
- Closeout
Imported.
Technical Specs
| Best Use | Backpacking |
|---|---|
| Tested Lower Limit | 17 degrees (F) – ISO |
| Tested Comfort | 28 degrees (F) – ISO |
| Temperature Rating (F) | 20 degrees (F) |
| Temperature Rating (C) | -6 degrees (C) |
| Weight | 2 lbs. 2 oz. |
| Ultralight | Yes |
| Shell | 15-denier ripstop nylon |
| Zipper Location | Left |
| Insulation Type | Down |
| Water-Resistant Down | Yes |
| Fill | 800-fill-power DriDown |
| Fill Weight | 1 lb. 0.3 oz. |
| Lining | 15-denier ripstop nylon |
| Sleeping Bag Shape | Mummy |
| Fits Up To (in.) | 78 inches |
| Shoulder Girth (in.) | 64 inches |
| Hip Girth (in.) | 58 inches |
| Stuff Sack Size | 7.4 x 15 inches |
| Gender | Men’s |















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