The slippers are made of pleasant to the touch material. The inside has been insulated with a shoe blanket. They have a thick platform, which protects against the cold ground and anti-slip sole. The soft insole, which can also be removed, ensures comfort during use. Be sure to also check out our other slipper offers!For size selection, please refer to the size chart. 36-23,5/37-24/38-24,5/39-25/40-25,5/41-26cm