Incredibly light snow boots from the Big Star brand have been made from a combination of eco leather and textile material. Lined with a pleasant-to-the-touch shoe lining inside. Fastened with Velcro. The Memory Foam System insert remembers the shape of the foot, provides the right fit, absorbs shocks and is resistant to deformation. The foam structure allows for moisture evaporation and temperature regulation. When choosing a size, please refer to the size chart. 30-19/31-19,5/32-20/33-20,5/34-21/35-22cm