These are surfing boots. I purchased them in the winter of 2018. I used them about 3 times during the winter season until around the spring of 2023. According to the measurement, they are 25cm. Please consider this item, understanding that it is a used product. * I will use recycled packing materials and ship with simple packaging. * When negotiating a price reduction, please state your desired amount, and I will do my best to accommodate your request. Type... Surf Boots Gender... Men Gender... Unisex