Voberry Baby Boys Summer Sandal Baby Shoes Sneakers Slippers Leater Prewalkers The sole of shoes is soft and thin suitable as baby prewalker US size 2.5--11cm/4.3, Suitable age--0~6 month US size 3--12cm/ 4.7" Suitable age--6~12 month US size 4--13cm/ 5.1" Suitable age-- 12~18 month Shoe upper material:PU Leater ,Sole material:Rubber