RevZilla

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Size	Thigh (in)	Calf (in)
SM	16.5	13.8
MD	16.5-17.3	13.8-14.5
LG	17.3-18.1	14.5-15.3
XL	18.1-18.9	15.3-16.1
2XL	18.9-19.7	16.1-16.5

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

How to Measure

T Thigh
Measure the circumference of your thighs at the widest point, while in a seated position, with your knees bent to a 90° angle.
CF Calf
While standing upright, feet flat on the floor, measure the circumference of your calf at the widest point, while keeping your ankle bent at a 90° angle.

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O'Neal Knee Guard Sizing

How to Measure