These marine shoes are made of breathable mesh material for a comfortable fit. They are amphibious and have a sturdy outsole, so it seems they were convenient for going to the sea or river, as they could be worn directly. It also seems that they didn't feel any pain on the soles of their feet when moving on rocky areas. Please understand that these are used children's shoes. - Brand: New Balance - Size: 23cm - Color: Blue - Model Number: KA208 Thank you for viewing.