Rab Sleep Limit: -28°C (-20°F) Offering refuge to those exploring the worlds highest peaks and the polar regions, the Andes Infinium is packed with cutting edge tech, built to keep you warm. The Andes Infinium 1000 is filled with 1000g of ultra-high lofting 800FP, goose down. It is constructed using trapezoid shaped boxwall baffles, which stack together reducing cold spots and maximise the lofting and efficiency of the down inside. Reflecting heat towards the body, the Rab TILT technology is seen as a silver sheen on this inside of the bag. Reducing heat loss by up to 32%, TILT substantially improves thermal insulation without compromising pack size, breathability, or weight. It has a mummy fit and offers a similar level of warmth to Rab's Expedition range of sleeping bags, but in a lower bulk package. The Gore-Tex InfiniumWindstopper® outer provides a robust, windproof shield against icy chills, and the face baffle and 3D neck collar cinch in snug around the face to seal in the hea