One Size fits most children ages 4-8, weighing 40-60 pounds.
Knee: 9 - 11in
Elbow: 6 - 8in
Wrist: 6 - 7in
PRO TIP: If your measurements are in-between the sizes shown or you’re simply in doubt, we strongly recommend sizing up to the larger size. We have found over the years that customers do better when they choose the larger size.