The human foot is one of the most complicated parts of our body. We have carefully designed our shoes to protect your child's feet, while incorporating many beneficial attributes to promote quality foot quality. Momo Baby Sandal Shoes features flexible rubber sole. PU leather upper/leather lining/rubber sole. Genuine leather breathable insoles keep feet comfy and dry. Momo Baby's entire line of footwear has been awarded the American Podiatric Medical Association's prestigious Seal of Acceptance which recognizes products which have been found beneficial and significant value to foot health.