Sea To Summit Alpine 2 ApII Sleeping Bag Regular - Ultra-Dry Down, -15 C rated

RRP $849.95
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Sea to Summit's ApII sleeping bag is ideal for ski touring and mountaineering. Featuring water resistant 3D NanoShell construction with 850+ Loft Ultra-Dry Down

Sea To Summit Alpine 2 ApII Sleeping Bag Regular - Ultra-Dry Down, -15 C rated

Sea to Summit's ApIII Alpine Series sleeping bags are ideally suited to high altitude and Arctic conditions. They have a thermally efficient, contoured mummy shape with an anatomically shaped boxfoot. The fill is 850+ loft Ultra-Dry Down which is water resistant and has extremely good warmth for weight. The outer is constructed from Sea to Summit's 3D NanoShell which provides both water resistance and condensation management to protect the down fill the effects of moisture.


Using a side block baffle construction the down is distributed 60% on the top 40% in the base to provide superior insulation. The lining is soft, down proof and breathable for comfort.


  • Contoured mummy shape
  • Water resistant 3D NanoShell outer
  • Soft, downproof, breathable lining
  • Differential cut shell with 3D sidewalls
  • Offset baffles
  • Down distributed 60% on top, 40% in base
  • Side block baffle 
  • Anatomically shaped boxfoot
  • Anti-snag zip draft tube
  • Neck baffle with dual elastic adjustment
  • Cushioned internal hood drawcord with dual adjustment
  • 2 way YKK zip
  • Internal zip pocket
  • Ultra-Sil compression bag included
  • Mesh storage cell and laundry bag included


  • Season Rating: Autumn/Winter
  • Temperature rating: -9°C to -15°C
  • Fill: RDS certified ULTRA-DRY Down 850+ Loft 90% Down Cluster Premium Goose Down
  • Material: 100% Polyester Shell, Polyester Lining, Goose Down Fill
  • Compressed Volume: 10 litres
  • Fill weight: Regular 710g /  Long 780g
  • Bag weight: Regular: 1365g / Large: 1500g
  • Zip Side: Regular - Left / Large - Left
  • Compression bag: Large 20 to 6.5 litre


Contoured Mummy Shape

Sea to Summit's contour mummy shape has been sized generously across the shoulders and chest to allow space for wearing extra layers in extreme conditions. There is knee room to allow turning and the boxfoot is oversized to give room for boot liners.
Ultra-Dry Down
Ultra-Dry Down has a water repellent treatment protecting the down from moisture and condensation. The water repellent polymer treatment vastly improves the downs water repellency without effecting it's weight or loft performance. Ultra-Dry Down retains over 60% more loft and absorbs 30% less moisture when compared with untreated down. This not only helps insulate better in wet conditions but means Ultra-Dry Down bags dry much quicker too. The treatment also stops bacterial and microbial growth, making the bags more hygenic and giving them a longer life span.
3D NanoShell
3D NanoShell uses a two layer construction to protect sleeping bag down from both external moisture and condensation from vapour leaving the users body. The outer layer is windproof, water repellent and breathable. It acts to protect the down from external moisture. The inner layer is a thin non-woven silicone encapsulated layer. As vapour from the body moves through the down and comes in contact with the shell, if the temperature is low enough it will form as condensation on the inside of the shell. The hydrophobic properties of the inner layer traps the condensation close to the outer shell thus preventing the down from getting damp.

About Sea to Summit:

Sea to Summit is a manufacturer of Outdoor, travel and watersports equipment. Started in Perth, Western Australia they have steadily grown and now their products are sold in thirty five countries around the world. They produce innovative, durable, lightweight and compact gear for travellers and outdoor enthusiasts. Through ongoing research and development they strive to be at the cutting edge of product and manufacturing innovation, producing better made and better performing products for their ever growing customer base around the world.

Sea to Summits Philosophy: 
“To equip and inspire. Our goal is to create such cool and useful gear that it motivates and inspires people to travel and lead an active, outdoor lifestyle. Every piece of gear is made to make you want to take it outside or travel with it, to make your trip lighter, to be more organised, more comfortable, more carefree so that no matter what the conditions, you can revel in being out there experiencing our wonderful planet.”



SKU 9327868035847
Barcode # AP2-R710R-UD
Brand Sea To Summit
Shipping Weight 1.5000kg

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Sea To Summit Alpine 2 ApII Sleeping Bag Long - Ultra-Dry Down, -15 C rated

Sea To Summit Alpine 2 ApII Sleeping Bag Long - Ul

$854.95 5% OFF RRP $899.95