These Baby Sandals are made of Genuine Leathers. • DURABLE NON-SLIP SOLES that are GOOD FOR FOOT DEVELOPMENT. They are made with genuine leather plus diamond grip pattern rubber sole. • PREMIUM QUALITY GENUINE LEATHER. Our moccasins' leather are soft with flexibility. • COMFORT - Cushioned Collar and Padded Insoles that provide extra comfort to walk outdoor. • SHOES STAY ON BABIES' FEET. They come with Adjustable Buckle and Belt closure. • SAFETY IS OUR TOP PRIORITY. The materials we use are audited and safe for children. Please refer to Sizing Guide Photos for sizing help. Make sure to add at least 3/8 inches (or 1 CM) of room for baby's foot development. Age is for references in general, it's recommended to measure the kid's foot plus 3/8" and pick the size accordingly. For example, some 7 months old baby girls are still in size 2. Some 18 months old boys may wear size 5 to 6 already.