Size/Fit Summary: Fits slightly smaller,Regular fit. Sizing suitable for 18 months to 8 years old (size 5-2). If they are in-between sizes or want to wear a thick sock,it is recommended to size up.Our cozy tonal blue Kids First Classic Insulated Rain Boots are designed to keep small feet snug and dry during winter. Each boot is handcrafted,like our iconic Original Boots,from 100% waterproof natural,vegan rubber with an anti-slip sole and a microfleece lining for extra warmth.We recommend that all Hunter boots be worn with socks to protect the wearer's skin from contact with rubber.Certified veganWaterproofHandcraftedVegan Shearling fleece lining for extra warmthRubber outsole with Original Kids tread patternCrafted from natural vulcanised rubberCan be worn in cold winter temperatures