Designed as insulation for cold, high-output days of skiing, climbing, snowshoeing or hiking, the Icebreaker Women's Helix Fraser Peaks Vest combines sustainable materials with a technical design. In the body Icebreaker used MerinoLOFT insulation, which provides a warm, breathable and natural alternative to synthetic insulation, and the stitch-free patterning ensure maximum warmth. The recycled polyester face fabric of the Helix Fraser Peaks Vest features a DWR that sheds light precipitation. Merino jersey stretch side panels help regulate body temperature on active days, and the 100% merino lining ensures a cozy feel inside. Zippered hand and chest pockets keep small essentials like lip balm, snacks and your phone close at hand. Features:Fabric weight: 260 Midweight Product Weight: Medium = 10.58 oz Fit: Regular Benefits: Warmth, comfort, breathability, odor resistance