Size is listed per US woman shoe measurements. *If you are a half size, order a size up. For instance, if you are a size 8.5, order a 9. Gorgeous and soft natural sheepskin slippers that you won't want to take off. Slip these on when you need to feel nature's warmth through your body. These slippers are especially great for those who love the natural movement of their feet as there is not a rubber or plastic sole. Made from 100% sheepskin, using the leather as the sole with extra fur padding inside. I personally appreciate this flexibility within a slipper, allowing my feet to be relaxed in their natural movement and flow when I’m lounging on a couch or bed. OPTION WITH RUBBER SOLE: If you are looking for extra foot support or want the flexibility to walk and be outside in these slippers, then we recommend the option with EVA foam. Care: Gently wash with a mild detergents (wool soap, Dr. Bronners or even baby shampoo) in cool water. This can be done on a “hand wash” setting in