The Sand UGG Infant's Erin Baby Boots is made from the highest quality plush twin-faced sheepskin with craftsmanship you expect from UGG® Australia.It is soft sole for comfort and indoor use for your baby,keeping baby's feet warm and clean. With a simple hook-and-loop closure, it goes on and comes off easily and comfortably. Make your little one feel just as pampered as you in a pair of UGG® Australia baby booties. There are three size for Ugg Infant's Erin Baby Boots Sand. Sizing recommendations: Small = Infant shoe sizes 1 to 3 (0 - 8 months) Medium = Infant shoe sizes 4 to 5 (9 - 16 months) Large = Infant shoe sizes 6 to 7 (17 - 24 months) Get a pair for your baby.