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The Rab Ascent 300 Sleeping Bag provides cozy-warmth and compact carrying for nights spent under starry skies in the backcountry. Rated down to 35F, this down-filled bag is ideal for three-season camping. The 650-fill European duck down promotes exceptional warmth-to-weight, meaning it keeps us toasty without taking up tons of precious pack space. The down features a hydrophobic coating that repels moisture from compromising its heat-trapping loft. Plus, the Pertex Quantum fabric not only repels dewy condensation from seeping through and dampening the lofty down clusters, but it's also made with entirely recycled materials for eco-friendly comfort.