Pro Knee Sizing Chart
Size
Top Knee Circumference
Bottom Knee Circumference
Small
13" - 16"
11" - 14"
Medium
15" - 18"
12" - 15"
Large
18" - 21"
15" - 18"
XL
21" - 24"
17" - 20"
This is just a guide. All Pro Knee Pads are open back and adjustable for excellent fit and comfort. If you wear large knee pads you probably wear large elbow pads.