The Winter Trek Stretch Womens Trousers provide both a warm and comfortable fit. Using both the latest stretch and thermal lined fabric, the trousers still guarantee a lightweight finish - ideal for walks and hikes in colder temperatures. Fabric Composition - the outer is made of 65% polyester and 35% cottonThermal lined - very lightweight fleece which provides warmth without weight. Made of 100% polyesterStretch fabric - allows for added comfort and flexibilityPockets - multipurpose velcro back and zip puller pockets