Thermodown 15 Sleeping Bag

Completely redesigned for 2026! We’ve taken what made the Thermodown 15 great and added significant improvements:

• RDS-certified 700 fill-power duck down
• 20D ripstop nylon shell and lining with PFC-Free DWR treatment
• Split baffle pattern prevents cold spots from migrating down
• Sleeping pad straps to keep you on your pad
• Phone pocket for handy access to your electronics
• 15 percent lighter and more packable!

Stay warm and comfortable, no matter the weather, in our outstanding Thermodown 15 down sleeping bag. With excellent materials and performance, your search for a great 3-season sleeping bag ends here! 

Superior Insulation

Cold weather is no match for the 25.8 oz. of 700-fill power down insulation stuffed into every corner of this bag. You will stay toasty warm down to 15F (-10C). However, the added warmth does not compromise on size and weight. The bag packs down to just 10 x 6 inches and comes in at only 2 lb. 8 oz.

Benefits

We've done our best to make this a great bag.

• On warm nights, easily shed heat with the large two-way YKK zipper which opens from top and bottom.
• To prevent annoying snags, we've incorporated a wide zipper guard.
• To keep the heat in, a large draft collar automatically wraps around your neck. No need to deal with cumbersome drawstrings or scratchy velcro. The fully insulated and contoured hood can also be completely cinched down. 
• A roomy trapezoidal foot box with extra insulation will keep your toes nice and warm. 

Accessories

Two elastic sleeping pad straps with adjustable buckles are included. The bag also comes with a durable compression sack allowing you to easily fit the bag into your pack. Between adventures, use the included mesh storage bag or hanging loops to properly store the bag.