Aska is a soft ankle-high slipper with 100% warming doubleface sheepskin - the highest quality sheepskin. This means that both lining and upper material are 100% sheepskin. The outsoles are made from soft sheepskin suede. (MJÚKA BRAND): "Mjúka combines a modern yet timeless design with Nordic simplicity - inspired by nature. Carefully chosen materials and superior adaptability provide exceptionally comfortable shoes that increase the well-being of all who wear them. Mjúka - Light on your feet."