These pre-walker or toddler cold weather boots from UGG(R) Australia feature all the comfort and handmade quality...just in a baby size. Sheepskin suede uppers in a mid-high boot style are soft but durable, with a strong Velcro(R) closure for easy on and a secure fit. Fully lined in snuggly fleece, with smooth sheepskin suede outsole. Small: age 0 - 8 months, Medium: age 9 - 16 months, Large: age 17 - 24 months