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Fly Racing recommends measuring thigh circumference 4" above the knee cap and calf circumference around the widest part of your calf.

Fly Racing Dirt Knee Guards

Manufacturer-Provided Sizing Information:

Size	Thigh Measurement (in)	Calf Measurement (in)
SM	15-17	12-13.5
MD	17-19	13.5-15
LG	19-21	15-16.5
XL	21-23	16.5-18

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.

How to Measure

K Knee
Using a caliper, measure the width of the knee joint across the kneecap. The leg should be completely straight and in a weight-bearing position.

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