A warm, technical insulating layer with a sustainable construction, the women’s stratus long sleeve zip is designed for fall backpacking trips, backcountry ski tours and other stop-and-go, cold-weather pursuits. The stratus features our Merino loft insulation, which forgoes traditional fills for a sustainable, water-resistant Merino blend (featuring recycled wool content) that insulates even when wet. On the exterior, a woven, recycled-polyester shell sheds the elements and a super-soft woven Merino lining provides the next-to-skin comfort that you know and love. The internal cuffs and Zippered front pockets keep your hands toasty on frigid days.