Supersoft medium weight waffle fabric. Reinforced seams. Coverstitch seams. Seamless outside leg. Easy care. Thermal cotton rich blend. 60% Cotton/40% Polyester. Please note: the sizes given are mens, womens sizing is one size up. Trespass Mens Chest Sizing (approx): S - 35-37in/89-94cm, M - 38-40in/96.5-101.5cm, L - 41-43in/104-109cm, XL - 44-46in/111.5-117cm, XXL - 46-48in/117-122cm, 3XL - 48-50in/122-127cm. Trespass Mens Waist Sizing (approx): S - 32in/81cm, M - 34in/86cm, L - 36in/91.5cm, XL - 38in/96.5cm, XXL - 40in/101.5cm, 3XL - 42in/106.5cm. Ref: UTTP3982