Duofold Women's Light Weight Thermatrix Performance Thermal Quarter Zip Pullover 92% Polyester, 8% Spandex Imported Varitherm closure Machine Wash Quick drying vapor technology evaporates moisture fast Thumbholes for added warmth without the weight Stretch for ease of movement Chafe-resistant super soft stitching helps keep you comfortable Thermatrix 3d textured matrix fabric pattern that wicks moisture and creates small air pockets that retain body heat