A jacket insulated with synthetic fiber has, for many, completely replaced the use of a thick fleece: a lightweight insulated jacket is warmer and wind doesn't blow through it. Thanks to the PrimaLoft Silver insulation fiber, this jacket is also nearly unaffected by moisture, as the fiber doesnt collapse in damp conditions nearly as much as down does. When used under a shell jacket, the shell can be ventilated without worrying about wind reaching your skin. Rab Extended Range product: In cooperation with Rab, Scandinavian Outdoor offers an extended product range. Rab Extended Range products are shipped to you directly from the manufacturer's warehouse in the Netherlands. - Slim fit - Windproof, breathable Pertex Quantum outer fabric - Breathable and air-permeable Thermic stretch fleece on the sides and undersides of the sleeves - Size M jacket contains 157 grams of PrimaLoft Silver Luxe insulation - Jacket can be packed into its own pocket - Two zippered outer pockets and