A must-have for mountain running and other intense activities in cold weather, the Norvan insulated sleeveless jacket is an extremely lightweight and compressible model that stores in its own pocket. 40 g/m² Coreloft™ insulation combines warmth, breathability and compressibility. The Fortius™ Air 20 outer material facilitates air circulation for effective temperature regulation and resists moisture with its durable water repellent (DWR) finish. Devoid of anything superfluous, this minimalist model has a clean cut that moves with you and combines with our GORE-TEX Norvan shell for impeccable comfort. High performance systems for trail running, for intense and long-term activities in difficult terrain. Technical systems for trail running, focused on freedom of movement and moisture regulation. Thermally insulated items provide effective warmth and protection from the elements. Solant designed for quick drying, increased durability, and high thermality even when wet.