Size: Size 40: Approx. 9.8 inches (25 cm); Size 41: Approx. 10.0 inches (25.5 cm); Size 42: Approx. 10.4 inches (26.5 cm); Size 43: Approx. 11.0 inches (27.5 cm); Size 44: Approx. 11.0 inches (28.5 cm); Made with high-speed breathable material, so you can wear it without worrying about weather conditions. Made of double-layer TPU material, it demonstrates impact resistance and reduces friction in the event of a fall. Equipped with an inner foam that hugs the ankles, and the boots fit perfectly on your feet for a secure fit. The ankle part is equipped with protection to protect your feet from impact on the sides. The side zipper and Velcro closure make it easier to wear.