These are children's snow boots from Kamik, a Canadian brand with over 100 years of history, renowned for its exceptional cold-weather boots. Size 9T, approximately 15-16 cm. I purchased these and used them only once on the ski slopes. They have thick inner boots, are highly waterproof (with some pilling), and keep feet warm and dry. They are also very durable. The size can be adjusted with both the Velcro strap and the laces. As these are used items, there may be some stains and pilling that couldn't be removed. Please understand that these are used items before purchasing.