ZippyRooz Glove Sizing Measure the circumference of your child's hand just below the knuckles. The sizes below are the largest size the gloves can accommodate. Size Measurement Approx. Age Small up to 4.75" 1-2 years old Medium up to 5.5" 3-4 years old Large up to 5.75" 5-6 years old Extra Large up to 6" 7-8 years old