Groovy velcro prewalker perfect for the toddler learning how to walk.- 100% natural leather upper and lining - Elasticised heel for soothing and snug fit.- Rubber pods underneath for non-skid.Sizing 19 (6 - 9 months)20 (9-12 months) 21 (12-15 months) 22 (15-18 months) 23 (18-21 months)