I purchased these for winter track practice and used them a few times. Retail price: 10,000 yen According to my child, they are lightweight and don't slip easily. There are faint initials on the heel. The soles are hardly worn, but my child has outgrown them, so I'm selling them because it's a waste. I'm also selling other track and field shoes, T-shirts, and shorts. The following is an excerpt from the official website: Designed for various indoor court players, pursuing support and flexibility on the court. The flex grooves in the outsole provide excellent flexibility and support for sudden movements. The mesh material in the upper improves breathability, and the synthetic leather material enhances support. Made in Vietnam Material Inner sole material: Synthetic resin/removable Remarks Compatible optional insole: 1173A029 Upper material: Synthetic fiber + artificial leather Sizes 19-28 Width/Last STANDARD Upper material Artificial leather (synthetic leather)・Synthetic fiber Outer material Rubber sole Other NON MARKING RUBBER compatible Product number: 1073A056.101