Built with a female-specific design and cutting-edge materials, the Andes Infinium 800 Sleeping Bag provides serious warmth and weather resistance during our harshest nights at base camp. Reflective TILT technology in the lining reduces heat loss by up to 32%, while GORE-TEX INFINIUM fights windchill without comprising comfortable breathability. The trapezoid-shaped boxwall baffles prevent cold spots and optimize the down for efficient warmth.Technical bag equipped for freezing, high-altitude expeditionsGORE-TEX INFINIUM WINDSTOPPER outer provides windproof barrierNylon face fabric with ePTFE membrane is moisture-resistantUltralight 800-fill goose down is treated for water-resistanceFace and neck baffle create a tight seal to prevent heat lossFlowgate tech prevents down movement to maintain even warmthGORE-TEX INFINIUM-lined neck prevents breath accumulation in bagWeight-efficient mummy cut with angled foot box for relaxed postureResponsible CollectionResponsibly SourcedMaterial[membrane/laminate] 13D GORE-TEX INFINIUM WINDSTOPPER [face fabric] 100% nylon, ePTFE [lining] 20D nylon ripstop, TILT technologyInsulation800-fill Responsible Down Standard-certified European goose down, Nikwax fluorocarbon-free hydrophobic finishShapemummyZipper3/4-length, 2-wayMax User Height5ft 11inShoulder Circumference63inHip Circumference53.5inFoot Circumference42.5inBag Length82.7inDraft TubeyesPockets[internal] 1 zippered stashVenting2-way zipperFill Weight800gDegree-10FStorage Sackzippered cottonStuff Sackwaterproof roll-topStuff Size17.7 x 11inClaimed Weight2lb 15.9ozActivitymountaineering, winter campingManufacturer Warrantylimited lifetime