Used only once for a short indoor training session. The inside of the shoes is still clean. I bought these, but they don't fit, so I'm selling them. There is a name written on the inside of the shoes. I tried to erase it as much as possible, but it's still faintly visible. Unisex nurse shoes. They are very light and use a flexible cup insole, making them extremely easy to move in. They have Velcro straps for easy on and off. The heel height is designed to be 3.5cm, making them comfortable to wear all day long. They use a non-slip, lightweight sole. The mesh on the sides of the shoes provides good ventilation and prevents stuffiness, so you can use them without discomfort. These are unisex shoes. 【Materials】 Upper: Synthetic leather / Mesh Sole: EVA Insole: Cup insole (antibacterial and deodorizing treatment) 【Specifications】 Width: 3E Heel: Approximately 3.5cm Weight per shoe: Approximately 170g (for size 23.5cm)