Sale Ends Dec 23
The flexibility of the Free-Flow Zip System—which lets you use it a quilt or wear it—plus its roomy shape make the Sea to Summit Trek 15F men's sleeping bag a comfy choice in cool conditions.
Fill
650+ fill-power duck down
Weight
Regular: 3 lbs. 2.7 oz.
Long: 3 lbs. 8.8 oz.
Compressed Volume
Regular: 10.6 liters
Long: 12.2 liters
Temperature Rating (F)
15 degrees (F)
- RDS-certified, 650+ fill-power duck down with a non-PFAS Ultra-Dry Down treatment to stay drier in damp conditions
- Recycled 20-denier polyester shell with a non-PFAS durable water repellent (DWR) finish blocks wind and moisture
- Polyester liner provides pure comfort
- Free-Flow Zip System allows you to open the bag sequentially for ventilation up to the point where it is opened flat as a quilt
- With the Free-Flow Zip System, you can even secure the snaps around your shoulders, open the footbox zipper and 'wear' the Trek around camp
- Tapered-rectangular fit is designed for spacious comfort when you're camping or traveling
- Sea to Summit Guarantee is offered for the lifetime of this sleeping bag
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 Sea to Summit 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 | 15 degrees (F) - ISO |
| Tested Comfort | 27 degrees (F) - ISO |
| Temperature Rating (F) | 15 degrees (F) |
| Temperature Rating (C) | -9 degrees (C) |
| Weight | Regular: 3 lbs. 2.7 oz. Long: 3 lbs. 8.8 oz. |
| Shell | 100% RCS recycled polyester |
| Zipper Location | Left/Right |
| Insulation Type | Down |
| Water-Resistant Down | Yes |
| Fill | 650+ fill-power duck down |
| Fill Weight | Regular: 1 lb. 6.4 oz. Long: 1 lb. 9.9 oz. |
| Sleeping Capacity | 1-person |
| Lining | 100% RCS recycled polyester |
| Sleeping Bag Shape | Semirectangular |
| Fits Up To (in.) | Regular: 72.5 inches Long: 77.5 inches |
| Shoulder Girth (in.) | Regular: 62.2 inches Long: 66.1 inches |
| Hip Girth (in.) | Regular: 58.7 inches Long: 62.6 inches |
| Stuff Sack Volume | 20 liters |
| Compressed Volume | Regular: 10.6 liters Long: 12.2 liters |
| Gender | Men's |
| Sustainability | Down certified to the Responsible Down Standard (RDS) Contains recycled materials |
A lifetime of benefits
Co-op Member Reward
Co-op profits go back to their source—members get 10% back annually on eligible purchases. (10% is typical but not guaranteed.)
Free U.S. Standard Shipping
No minimum purchase amount required. Exclusions apply.
Buy and Trade In Used Gear
With Re/Supply, co-op members shop and trade in used gear that’s ready for more life outside.
20% Off Bike & Snow Shop Services
Members save 20% on bike & snow shop services. Exclusions apply.