"In Stock" means this item is ready to ship. Orders placed before 3pm EST using a ship speed of 1 Day, 2 Days, or 3 Days will ship SAME DAY. Orders using 4-6 Day ship speed will ship within one business day.
"Ship Date" means we will special-order the product for you, and this is the date we expect your shipment to leave our warehouse.
"Oversized" means the item is large and can only be shipped using 4-6 Day ship speed. Additional shipping charges may apply.
"Freight" means the item is too large for standard shipping methods, and must be shipped by truck freight for an additional fee. Someone must be present to inspect, sign, and accept delivery, so we will call you to schedule delivery.
If you have any questions, please call 844-833-6921
The Sea to Summit Alpine APIII Sleeping Bag is a high altitude sleeping bag for expeditions in arctic conditions. The APIII is rated down to -4 degrees Fahrenheit, packed full with 850+ fill ULTRA-DRY down, treated for water resistance. The contoured mummy shape wraps around your body with a neck collar and draft tube to prevent the cold from leaking inside. At 3 pounds, 9 ounces (regular), you won't mind carrying it on all of your winter adventures.
Products on Sale are Discontinued Styles or Colors.
FEATURES of the Sea to Summit Alpine APIII Sleeping Bag
850+ Loft ULTRA-DRYDown 90/10 Down Cluster Premium RDS-certified Goose Down
Security pocket located inside the bag is easily accessible
Side block baffle construction resulting in more down located in the top of the bag for maximum insulation
Oversized neck collar and hood-seal
Contoured mummy fit and anatomical shaped foot box
Includes lightweight Ultra-Sil compression bag, mesh storage cell and laundry bag
Draw or Cinch Cord, Draft Collar, Water-resistant, Stuff Sack Included
Basecamp and Expedition, Winter Camping, Backpacking, Mountaineering and Alpine, Travel
Exact Temperature Rating:
-4 Degrees Fahrenheit
Sleeping Bag Shape:
850+ Loft ULTRA-DRY Down
Fill Weight (Regular):
Sea to Summit 3D Nano Shell, Sea to Summit ULTRA-DRY Down
-50 - -1 Degrees Fahrenheit
Max User Height (Regular):
3D Nano Shell
3D Nano Shell is a protective layer between an outdoor enviroment which prevents condensation and external moisture affecting the soft, fluffy down of a Sea to Summit sleeping bag. The NanoShell fabric face is windproof and water repellent, while the 3D barrier of non-woven silicone encapsulated layer allows moisture vapors and condensation to pass through. If this condenses on the inside of the shell, the condensation (and any external moisture) cannot pass back into the down. Simply put, it'll protect the down so the down can keep you warm.
Sea to Summit ULTRA-DRY Down
ULTRA-DRY Down is a treated insulator for Sea to Summit sleeping bags. ULTRA-DRY treated down repels moisture, so when your environment is damp, your gear stands a much better chance. The down will retain its loft, dry faster and is even anti-bacterial and anti-microbial, improving their life span. When conditions are bad, your bag doesn't have to be.
Rated 5 out of
Truly a Quality ProductI have owned many sleeping bags over the years and this is a favorite. It's comfortable, has good loft and is well constructed. Also, there is not a lot of extra room to heat. I'm 5'6" and 150. A larger person may be cramped but it's perfect for me. Wearing just base layer, I am warm and comfortable with temps in the mid 20s and thirties. I'm not happy with all my Sea to Summit purchases but this one is a winner. [This review was collected as part of a promotion.]