Original Kids First (18 Months-8 Years) Navy Wellington Boot - K7 Original Kids First (18 Months-8 Years) Navy Wellington Boot Size/Fit Summary: Fits slightly smaller, Regular fit. Sizing suitable for 18 months to 8 years old (size 4-1). If they are in-between sizes, it is recommended to size up. The Kids First Classic Wellington Boot has been updated with a new and improved sole. Perfect for puddle splashing, these kids blue welly boots are handcrafted from natural rubber, fully waterproof and feature a specially developed deeper textured/zigzag tread to reduce slipping. With a 100% recycled polyester lining and rounded toe which gives little feet room to move, it ensures complete comfort for every adventure. We recommend that all Hunter boots be worn with socks to protect the wearer's skin from contact with rubber.