WATERPROOF: Water resistant rubber exterior with soft cotton plaid insulator liningCONVENIENT CLOSURE: Lace up with side zipper, making it easy to put on and take offNON-SLIP SOLES: Non-slip, lightweight, breathable and durable, deliver a all-day comfortCOMFORTABLE INSIDE: Soft and removable Sole insert,keep the little feet dry and confortableSUITABLE: Perfect for all season,suit for boys and girls, very stylish and comfortableNote: There are no metal pieces on the soles of 21-25, only 26-30 and 31-36 have metal pieces.Size: 21-25, 26-30, 31-36.Inner length: 21-25: 13, 13.5, 14, 14.5, 15 cm26-30: 16, 16.6, 17.2, 17.9, 18.5 cm31-36: 19, 19.7, 20.5, 21.2, 22, 22.5 cmAbout Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact usDuring the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shoppingThanks for your cooperation and we'll make you feel satisfied.