Women's ankle boots are made of plastic. This model has a stiffened heel. Boots tied with round laces. Set on a low platform and a flat heel made of rubber material. They are non-slip. Inside, they have insulation in the form of a footwear blanket. Check also other models of boots! When choosing a size, please follow the size chart. 36-23/37-23,5/38-24,5/39-25/40-25,5/41-26cm