These are lightweight, quick-drying waraji-style sandals made by wrapping a nylon core with yukata fabric. The pink ones are cotton, and the black ones are wool. They are made from recycled kimono fabric, but are new as sandals. The color in the fourth picture is the closest to the actual color. The recommended size is 24-24.5cm. To wash, hand wash and put in a net for spin-drying, or use the delicate cycle in a washing machine with a net. Please wash separately as there is a risk of color bleeding. If the thong becomes loose or tight after wearing for a while, please untie and retie the thong on the underside. These are handmade, so they are not perfect. Please understand this before purchasing. Please refrain from purchasing if you have a dog allergy.