Every child is different but the following size guide may help you gauge the size required.

All you need is a tape measure to measure your child’s chest and waist. It’s best to do this over bare skin or tight-fitting clothing.

Waist: Measure the natural waistline (If you ask your child to bend to the side, the crease that forms is your natural waistline.)

Chest: Measure directly under your child’s arms at the fullest part of their chest (this is usually right at the level of their armpits) and round their shoulder blades.