Sea to Summit Alpine AP II
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Sea To Summit Alpine APII 5F 850 fill Down Sleeping BagThe Sea To Summit Alpine APII 5F 850 fill Down Sleeping Bag is the quintessential choice when traversing those challenging high altitude trails. The sleeping bag's mummy and contoured shape, is specifically designed to trap body heat so as to keep your snug and cozy, even on the coldest of expeditions. Its zip draft tube ensures that no warmth escapes from between the zipper coils. Additionally, the zipper comes with an anti snag feature, for smooth usage and minimum inconvenience. The neck draft tube prevents drafts from entering into the bag, minimizing heat loss around the face. The lightweight Ultra-Sil compression bag, tackles the dual problem of storage and handling, making this sleeping bag exceptionally convenient. With the Sea To Summit Alpine APII 5F 850 fill Down Sleeping Bag, you'll sleep like a baby even in the coldest of climates.
By using the highest quality 850+ European down fill, Sea to Summit was able to get the Alpine ApII down sleeping bag under 3 lbs, an impressive feat for a full-feature winter mountaineering bag. Contoured mummy shape is cut with a fitted hood, broader shoulder and large chest to maintain thermal efficiency and to accommodate extra layers in cold conditions Differential allows lining to conform to your body without overlaps or gaps to eliminate cold spots Offset baffle construction allows down to maintain full loft and minimize loss of heat through the seam lines Side block baffle technique allows a 60-40 (top-bottom) fill ratio keeps top down uncompressed and you warmer Lightweight 3D NanoShell(TM) shell uses Nano Durable Waterproof Repellent (DWR) to provide a high level of water repellency while 3D Barrier promoting fast evaporation to keep humidity from affecting down loft Anatomically tapered foot box accommodates the natural position of the feet and is roomy enough for liners Soft touch lining is down proof by construction, highly breathable and durable Oversized neck collar, draft tube, and cushioned internal hood seal with dual adjustments keep drafts out Anti-snag zipper system uses a high-density poly cloth hidden in the draft tube for smooth, snag-free zipping Full length, two way zipper side and foot zip allow not only infinite ventilation, but conversion from a traditional mummy to a flat duvet YKK #5 zippers allow this bag to unzip from the top and bottom for ventilation or to be used with another Sea To Summit bag (Trek, Traverse, and Alpine) of any size to create a double bag Medium sized internal pocket is great for storing electronics to preserve battery life in cold conditions Ultra-Sil(R) compression sack packs down from 15L to 5L Compression sack, mesh storage sack, and laundry bag included Max user height recommendations - 6'0'' Long - 6'7''
Designed for high altitude overnights, the Sea to Summit Alpine ApII down sleeping bag keeps your nights warm when trekking the Himalayas or touring the Alps hut to hut. High loft, premium 850-fill-power European duck down offers superb warmth with minimal weight; Ultra-Dry Down(TM) water-repellent treatment protects down from moisture. Ultra-Dry Down is a water-repellent polymer treatment applied to the 850-fill down; Ultra-Dry Down retains 60% more loft and absorbs 30% less moisture than untreated down. With a European Norm (EN) lower-limit rating of 5degF, the ApII bag will help keep you warm in all seasons, including winter. Shell fabric is constructed of a 20-denier ripstop fabric treated with a Durable Water Repellent and a non-woven silicone encapsulated fabric. Innovative shell manages condensation, moving moisture vapor outward through down and siliconized barrier; shell repels water and protects the loft of the bag. Lining is a breathable, durable 20-denier polyester fabric with a soft touch. Contoured mummy shape is cut with a fitted hood, broad shoulders and large chest (to accommodate layering of clothes); generous room around knees ensures comfort when turning. Upper side of bag is differentially cut so that the inner layer is smaller than the outer layer; this creates a consistent thickness of insulation and helps prevent cold spots. Lower side is cut in reverse so that the inner layer is larger than the outer layer; this allows down to loft up, filling spaces around body in warmth. Oversize draft tube backing the 2-way zipper keeps the warmth in and the cold out; zipper is backed by stiff, antisnag tape for smooth operation. Anatomically tapered foot box allows feet to rest naturally; it also preserves loft and allows down to drape close to feet for warmth. Oversize collar drapes comfortably over neck and shoulders, sealing out drafts; dual elastic adjusters.
Even with all its insulating awesomeness, down is pretty much worthless when wet. That's why the Sea To Summit Alpine ApII 5-Degree Down Sleeping Bag uses 3D Nano Shell to stop both external and internal moisture, because even water vapor produced by your body while you sleep can be a dampener. And the miraculous 850-fill Ultra-Dry Down repels moisture to retain loft that will keep you warm on extended trips during the coldest months. Baffled construction, cushioned hood, and zipper and neck draft tubes further ensure head-to-toe comfort.