These are lightweight, quick-drying waraji-style sandals made by wrapping a nylon core with navy wool and white yukata fabric. Although made from recycled kimono fabric, they are new as sandals. The recommended size is around 24.5cm. To wash, hand wash and put in a net for spin-drying, or use the delicate cycle in a washing machine with a net. Wash separately as there is a risk of color bleeding. If the thong becomes loose or tight after wearing for a while, try untying and retying the thong on the underside. Please understand that this is a handmade item and not a perfect product before purchasing. Please refrain from purchasing if you have a dog allergy.