Thank you for viewing. Highly recommended kids' hiking shoes. The sole is Vibram and the surface is waterproof. They were also used for climbing in Yakushima. My son has been wearing this series of hiking boots for a long time and is hooked on hiking. The size marking has disappeared, but it's European size 34, which is 21cm. He actually wore them when he was wearing 21cm sneakers. LYTOS high-cut kids' mountain & snow shoes, with Vibram soles for excellent grip. Selling because they're too small.