Fabric is one of the most important details in all garments. The Hors Categorie jacket is one of the most sophisticated winter jackets on the market with 6 different fabrics. The main fabric is a premium four-way stretch bonded material, waterproof, wind proof, thermal and breathable. Important to stop wind and rain getting in and cooling your core body temperature as you ride, at the same time it needs to allow moisture and heat to escape to eliminate sweat build up and the subsequent chill that follows.