1. Upper material: PU 2. Insole material: EVA 3. Sole material: rubber 4. Wearing style: front lace-up 5. Function: breathable, lightweight, non-slip, wear-resistant 6. Soft and comfortable material, wear-resistant and non-slip, easy to put on and take off 7. Dry lining, comfortable and breathable, simple and versatile 8. Size: 39, 40, 41, 42, 43, 44