Thank you for looking! These are handmade, comfortable on bare feet, and made of cotton fabric, making them healthy handmade cloth zori sandals. (´︶` ) The finished size is different from shoes, so it's okay if they're not a perfect fit. They will conform to the shape of your foot as you wear them. You can adjust the thong by tightening or loosening it yourself. Pull the front thong on the underside and retie it. We recommend using them tight at first. They can be machine washed in a laundry net. The soles of these sandals have been pre-washed, but there is a possibility of color fading, so please wash them separately from colored items. #ClothZori #ClothSandals #RoomShoes #Slippers