Cold days in the mountains require versatile layers like the Rossignol Opside Jacket for men. You can wear it under a shell to retain warmth on the mountain, or wear it alone while cross-country skiing and hiking. No matter how you enjoy cool weather, the breathable synthetic insulation provides warmth without bulk and helps regulate your temperature as you warm up. Stretch fabric and pre-shaped sleeves support natural movement. Classic fit with a flattering, tailored cut for freedom of movement. The fabric has just the right amount of stretch for easy movement. Lightweight, breathable, and recycled. The breathable Primaloft® Black insulation keeps you warm even when wet and is made from 100% recycled insulation from plastic bottles. GRS certified (Global Recycled Standard) and PFC-free water repellent. It includes a durable water-repellent (DWR) coating that repels light snow and rain without the use of toxic fluorocarbon-based chemicals.