Active Adjustable Buckle - The adjustable buckle,allows you to adjust the top to make these summer sandals fit your kids feet just right. No longer to worry about whether your kids can fit these athletic sandals well or not Concave Insole Design - The toddler sandals featured with concave insole, makes the contact area between the soles and kid's feet greater. Keeping your kids walk comfortablely and from falling Non Slip Sole - Featured with cushioned sole and shoe-type pattern which can grip the floor very well for your toddler's protection from falling.These infant sandals have excellent traction in the slippery area,such as bathroom,beach,pool,etc. Removable Insole - These walking sandals have an unique design - a detachable insole,which make these kids sandal slippers easy and thoroughly to clean Size - 100% Satisfaction Ganrantee. Our slide sandals offers the most standard size chart for you. If you have any doubts about the size of these baby boys girls sandals, Please do not hesitate to contact us.