I bought these on Rakuten for my children's summer vacation, but they ended up not being used. I work full-time during the weekdays, so my responses to questions may be delayed until the evening, but thank you for your understanding. 22cm marine shoes made of 100% polyester. - Product Name: Marine Shoes - Size: 22cm - Material: 100% Polyester - Model Number: POMS-1000 - Color: MS-99 BLK Thank you for looking.