The Loap CORSO women's winter boots or "farmer's boots" have a durable upper made of solid polyurethane and are softened around the ankle with a pleasant fabric. The lining is made of warm fleece, so they are pleasantly warm. The removable insole is also made of warm fleece and EVA foam material which is great for shock absorption. The sole is thermoplastic rubber and a type of high quality synthetic rubber with low level of deformation by pressure.