These are 16cm black sandals for boys. They're Crocs-style, and if I remember correctly, I bought them at Nishimatsuya. They came with removable charms that you can attach and detach as you like. The holes where the charms go are star-shaped, and you can remove all but your favorite charms to wear them as simple sandals. They have a strap, but you can also wear them by simply slipping your foot in, with the strap resting on top. Alternatively, you can move the strap to the back of the heel to secure it, allowing your child to run around without any problems. My son loved wearing them. I washed them at home, but there's some dirt on the charms, and the soles are a little worn. Also, there are marks left from where I had name tape on the inside upper part. Since sandals are seasonal items and children quickly outgrow them, would anyone interested in a slightly cheaper option, even if they're used? I will package them to prevent water damage and ship them via Yu-Packet Plus. Immediate purchase is possible.