The baby booties were designed for babies from 0 to 18 months. - Our baby boots made with cotton and fleece to ensure all-day warm and comfort. - The hook and loop closure make these baby slippers easy to put on and they keep the shoes securely on your baby's feet. - Rubber anti-slip sole, perfect as prewalker, pram, crib, first walking shoes. - The baby shoes prefects for daily use by baby girls and boys in winter. Size Information: Age Group Insole Length 0-6 moths 11 cm/4.25 inches 6-12 months 12 cm/4.73 inches 12-18 months 13 cm/5.12 inches Note: 1.Insole Length=baby's foot length+0.5~1 cm space room 2.Please measure your baby's foot length to choose the right size for your baby About us: Every baby is an angel and is the cutest person in the eyes of all. We attentions to product quality and every aspect of baby's development. Our philosophy is to provide high quality and safe product for babies,and the ultimate goal of product design is safe,comfortable,soft,lightweight. We are confident that this shoes will be the best gift to your baby.