Troy Lee Designs 6400 Knee Brace Stability without bulk The Troy Lee Designs 6400 Knee Brace is designed to stabilize and protect the knee without hindering pedaling or comfort. To lessen the risk of hyperextension, the 6400 features built-in hyperextension stops and bilateral support hinges. A thermoplastic knee cap protects from impacts, while an abrasion-resistant fabric cover resists abrasions. Troy Lee Designs' X-Fit(R) Strap System creates a secure, comfortable fit by way of overlapping straps which contour to your body to provide comfort and added stability. Easy-grip Hypalon(R) pull tabs make easy work of getting the braces on, even if you're wearing gloves-while moisture wicking frame liners and pads keep you cool no matter how long you ride. Features X-Fit(R) Strap System contours to the knee and provides stability Thermoplastic knee cap adds abrasion resistance Integrated hyperextension stops and bilateral support hinges reduce the risk of knee hyperextension Adjustable upper and lower compression straps provide a comfortable fit Molded thermoplastic knee cap for abrasion resistance Easy-pull Hypalon(R) pull tabs for great grip when pulling the guards on, even while wearing gloves Sizing Size Small Medium Large XLXXLThigh Circumference (in)14. 5 - 17"17 - 19. 5"19. 5 - 22. 5"22. 5 - 25. 5"25. 5 - 30"Knee Circumference (in)11. 5 - 13"13 - 15"15 - 17"17 - 19"19 - 22"Calf Circumference - 6" below knee (in)11. 5 - 13"13 - 14. 5"14. 5 - 16. 5"16. 5 - 18. 5"18. 5 - 22" | Troy Lee Designs | 6400 Knee Brace Men's | Size Xx Large In Black