Therm-a-Rest Ohm 20 Degree Ultralight Down Camping Sleeping Bag

Price: $301.57
(as of Jun 17, 2025 13:36:30 UTC – Details)


When you need ultralight weight and packability, but can’t go without warmth and comfort, the Ohm 20F/-6C is hard to beat. Weighing in at just 1 lb. 6 oz (635g), the Ohm sleeping bag brings balance to backcountry pursuits with a roomy fit and the ability to convert into a two-person quilt. Filled with high-loft 900-fill Nikwax Hydrophobic Down, it delivers top-notch warmth-to-weight performance with moisture-resistant insulation that dries fast and compresses small. Thermally efficient box baffled construction maintains consistent warmth distribution while heat-mapped Zoned Insulation prioritizes key warmth areas. Ultralight shell fabric and high-loft down keeps overall weight and packed size to an absolute minimum. Unique in its class, a 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. Two fully unzipped Ohms can be stacked and zipped together to create a comfy double bag for adventure duos. Designed with the Therm-a-Rest commitment to quality and performance, the Ohm keeps your pack featherweight and versatile without sacrificing an ounce of performance.
100% Nylon
Imported
The ultimate down sleeping bag choice for ultralight 3-season adventures where saving weight and space are top priorities, without compromising comfort
RDS-certified and PFC-free 900 Fill Nikwax Hydrophobic Down insulation absorbs 90% less water and dries 3x faster than untreated down
Full-length zipper extends around the footbox; allows for use as a quilt, custom ventilation or mating with another Ohm sleeping bag
Box baffled construction uses mesh walls to maximize loft and minimize cold spots, while a drawcord at the collar seals in heat
Ultralight shell material, insulation and precision design keep packed size to an absolute minimum
Combine two fully unzipped Ohms and pair them for a cozy two-person sleeping bag
Responsible Down Standard Certified which ensures the waterfowl in the down supply chain are treated humanely