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Whether we're ice-climbing or mountaineering, we can count on the Montane Anti-Freeze XT Hooded Down Jacket to keep us feeling toasty all day. Packed with 750-fill down and clocking in just over a pound, this jacket can easily slip into its stuff sack and be stored in our pack when the sun is shining, and be brought back out when temperatures plunge or the peak is close by. Everything in the jacket is treated to be water-resistant, including the down, so we can count on dry, lofty warmth even in snow or light rain. Both the outer fabric and the down lining are made from 100% recycled nylon, giving us peace of mind as we feast on a climb.