This is a product with a defect. It has been worn once for a test fitting. Something like glue is attached to the sole area. There are no issues with the shoes themselves. It may come off if washed a few times. YONEX running shoes, Carbon Cruise SR Color: Tiger Lily Size: 26.0cm Retail price including tax: 19,800 yen Features: Power Cushion, Power Cushion Plus, Feather Balance Foam, Feather Light X, Durable Skin Light, 3D Power Carbon, Endurance Rubber.