The matrix system jacket changes with the seasons. An H2xtreme waterproof/breathable outer shell with articulated elbows, to allow for a full range of movement, and fully sealed seams to ensure the jacket stays watertight. Works in synergy with a light - Weigh and thermally robust, interchangeable thermal shell liner that zips in and out as required.Washing Instructions Machine wash cold. Tumble dry low. Do not iron. - The matrix system jacket changes with the seasons. An H2xtreme waterproof/breathable outer shell with articulated elbows, to allow for a full range of movement, and fully sealed seams to ensure the jacket stays watertight. Works in synergy with a light - Weigh and thermally robust, interchangeable thermal shell liner that zips in and out as required.Washing Instructions Machine wash cold. Tumble dry low. Do not iron.