Sale Ends Dec 23
When you need ultralight weight and packability, but can't go without warmth and comfort, the Therm-a-Rest Ohm 20F/-6C sleeping bag is hard to beat. It weights just 1 lb. 6 oz. and has a roomy fit.
Fill
900-fill-power Nikwax hydrophobic goose down
Weight
Regular: 1 lb. 6 oz.
Long: 1 lb. 9 oz.
Compressed Volume
3.7 liters
Temperature Rating (F)
20 degrees (F)
- High-loft 900-fill-power Nikwax Hydrophobic goose down delivers top-notch warmth-to-weight performance with moisture-resistant insulation that compresses small
- 900-fill-power Nikwax Hydrophobic down is PFC-free and absorbs 90% less water and dries 3x faster than untreated down
- Thermally efficient box baffled construction maintains consistent warmth distribution while heat-mapped Zoned Insulation prioritizes key warmth areas
- Box baffled construction uses mesh walls to maximize loft and minimize cold spots
- Ultralight shell fabric and high-loft down keeps overall weight and packed size to an absolute minimum
- Full-length zipper extends completely around the footbox, allowing it to be opened flat as a quilt for added comfort and mobility on warm nights
- 2 fully unzipped Ohms can be stacked and zipped together to create a comfy double bag for adventure duos
- Drawcord at the collar seals in heat
- Ultralight shell material, insulation and precision design keep packed size to an absolute minimum
- Semirectangular shape cuts weight while allowing for unencumbered sleep
- Responsible Down Standard–certified; certification ensures the waterfowl in the down supply chain are treated humanely
- Compression and storage sacks included
Imported.
Temperature ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth, since many different factors contribute to your comfort while you sleep. Backpacking bags are typically rated for temperature according to an independent testing protocol—currently International Organization for Standardization (ISO) 23537, though some older items followed European Norm (EN) 13537. Testing is based on a person wearing one base layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38.
Each bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
View all Therm-a-Rest Backpacking Sleeping BagsEach bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
| Best Use | Backpacking |
|---|---|
| Tested Lower Limit | 20 degrees (F) - ISO |
| Tested Comfort | 32 degrees (F) - ISO |
| Temperature Rating (F) | 20 degrees (F) |
| Temperature Rating (C) | -6 degrees (C) |
| Weight | Regular: 1 lb. 6 oz. Long: 1 lb. 9 oz. |
| Ultralight | Yes |
| Shell | 10-denier nylon ripstop with durable water repellent (DWR) |
| Zipper Location | Left |
| Insulation Type | Down |
| Water-Resistant Down | Yes |
| Fill | 900-fill-power Nikwax hydrophobic goose down |
| Fill Weight | 12.5 ounces |
| Sleeping Capacity | 1-person |
| Lining | 10-denier nylon ripstop |
| Sleeping Bag Shape | Semirectangular |
| Fits Up To (in.) | Regular: 72 inches Long: 78 inches |
| Shoulder Girth (in.) | Regular: 62 inches Long: 66 inches |
| Hip Girth (in.) | Regular: 56 inches Long: 59 inches |
| Stuff Sack Size | 6.5 x 8 inches |
| Stuff Sack Volume | Unavailable |
| Compressed Volume | 3.7 liters |
| Gender | Unisex |
| Sustainability | Down certified to the Responsible Down Standard (RDS) |