These are waraji-style sandals, lightweight and quick-drying, made by wrapping a nylon core with a new "mame shibori" (bean-patterned) tenugui hand towel and weaving it. Although they are made of cotton, they are softer than yukata fabric, so the material is delicate. However, they feel good against the skin. They are a "B-grade" item because the left and right sandals are slightly different in size. Occasionally, there is red coloring on the black polka dot sections, which is from the red polka dots bleeding. It is not blood. We recommend a size around 24cm. 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 the color may run. If the thong loosens or feels tight after wearing them for a while, untie and retie the thong on the underside. These are handmade items, so they are not perfect. Please understand this before purchasing. Those with dog allergies should refrain from purchasing.