Purchased for ski underlayers, opened but unused and stored at home. I have been using a different color of the same type. Although thick, it is not bulky, has excellent heat retention, and is perfect for outdoor winter activities and playing in the snow. Unused, as my child has outgrown them. HEATTECH red leggings, size 120, made of heat-retaining material. - Brand: HEATTECH - Size: 120 - Material: 60% Polyester, 30% Rayon, 10% Nylon - Color: Red Thank you for looking.