Shivers...keep warm...no sweat. Shivers are made from polyester, nylon and spandex to keep you warm all day without making you sweat. Shivers can be worn under work or school clothes and are ideal for any outdoor activities in the cold. Shivers are made with a reinforced attached sock for one piece comfort that helps keep out the cold from toe to waist. Available in Men’s, Women’s, Boys and Girls in a variety of colors.