Baby Boy Girl Pre-Walker Leather Tassel Fringe Moccasin Slip-on Shoes Material: PU Leather/cotton Size 0-6 Months: feet less than 10.5cm (3.5 inch) Size 7-12 Months: feet less than 11.5cm (4 inch) Size 13-18 Months: feet less than 12.5cm (4.5 inch) Please measure your baby feet before you buy the shoes ,please add 0.5-1cm more than the feet.That's to say, if your baby feet is 11.5cm, please choose size 13-18 Months.