Whether worn alone or with a warm-up jacket, the SwimOutlet Unisex Warm Up Pant provide lightweight protection and an inner lining for warmth. These pants are also water-repellant and have side pockets for added utility and durability. Composition Outer: 100% Polyester. Lining: 100% Polyester. Details Mesh lining above knees, polyester lining below for easy on and off. Elastic waistband with drawcord. Side pockets. Back pocket with hook and loop closure. Extended leg zippers. Imported.