These are lightweight, quick-drying waraji-style sandals made by wrapping a nylon core with yukata fabric. They are made from recycled kimono fabric, but are new as sandals. Recommended size is 23-23.5cm. To wash, hand wash and put in a net for spin-drying, or use a washing machine with a net on the delicate cycle. Please wash separately as there is a risk of color bleeding. If the thong loosens or feels tight after wearing for a while, please untie and retie the thong on the underside. These are handmade items, so please understand that they are not perfect before purchasing. Please refrain from purchasing if you have a dog allergy.