The men's Helix Long Sleeve Zip is a technical mid layer designed with natural materials to provide wearers with versatile insulation during alpine activities like skiing, hiking, and climbing. This jacket's body is padded with 70g of Icebreaker's natural MerinoLOFT™ insulation, which provides breathable warmth as an alternative to synthetic fills. The face fabric is made from 100% recycled polyester and features a precipitation shedding DWR finish. Stretchy side panels made from a merino jersey blend help regulate body temperature while providing flexibility during high-intensity activities. The interior is lined with a forgiving, warm, and moisture wicking 100% merino wool weave, which wears comfortably over base layers. The jacket sleeve cuffs are stretchy and feature comfortable thumbhole loops for easy changes when pulling on a hardshell or mitts.