The Icebreaker Women’s Helix Zip Jacket is designed as an active alpine insulation for cold, high-output days of skiing, climbing, snowshoeing or hiking, that combines sustainable materials with a technical design. In the body Icebreaker uses MerinoLOFT™ insulation, which provides a warm, breathable and natural alternative to synthetic insulations. The 100% recycled polyester face fabric features a DWR that sheds light precipitation.