Clarks Size Calculator
Buying Tips

Fitting Winter Boots and Wellies for Kids

Boots and wellies fit differently to everyday shoes. Size them with room for thicker socks.

Children's wellies and winter boots by a door

Parents tend to buy boots and wellies in a rush when the weather turns. Five checks help them fit as well as everyday shoes.

Allow for thicker socks

Measure your child’s feet in the socks they will wear with the boots. Thick socks add width and length.

Wellies: snug at the heel

Most wellies have no fastenings, so the heel lifts as your child walks. Leave about a thumb’s width at the toe and stay within half a size of the shoe size. A full size up makes wellies flap and rub.

Winter boots: check the width

Insulated boots give less than leather shoes. Look for adjustable straps, laces or a wide opening if your child takes a wide fitting.

Start with the calculator

Measure with a foot gauge, then use the size calculator for your child’s size and width. Try each boot on before you settle on it.

Check mid-season

Feet keep growing through winter. Measure again every 2 months, as in our measuring schedule.