TheAltura Thermostretch 3 Overshoes uses a Neoprene construction known for its snug fitting nature and thermal properties. The use of Neoprene allows for a snug fitting pair of overshoes that have a great deal of stretch ability increasing the freedom of movement whilst retaining thermal properties. A reflective print on the side of the overshoe helps improve rider visibility.Altura Thermostretch 3 Overshoes FeaturesHighly reflective graphicFitted designAngled rear zip closure with Velcro tab fastenerNeoprene main body fabricThermal properties help to keep you warm in colder monthsAbrasion resistant underfoot, heel and toe fabricHighly breathable