I purchased these for a gym event and used them 2-3 times. They are light and easy to carry, and very comfortable to wear. I no longer have any gym events, so I'm selling them. Size is M, for 23.5-24 cm. Upper: 100% polyester Insole: 90% polyurethane, 10% cotton Sole: Rubber I think the purchase price was around 3000 yen. They have been home-cleaned.