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We whip Marmot's Ares Down Jacket out of its pocket whenever we need midweight warmth on our skiing, climbing, or backpacking adventures. Treated with Down Defender, this jacket's 600-fill down insulation retains its lightweight loft in wet environments to keep us warm. Marmot coated the Ares with DWR for extra water-resistant protection, because we can never stay too dry, and Angel-Wing Movement makes sure we ski, climb, and hike with a full range of motion.