Leatt Knee Guard Rea Flex Ultra Light EXTFull Length Ultra-Light and Soft Impact Gel Protector The Leatt Rea Flex Ultra-lite EXT is engineered for maximum pedal efficiency and comfort and covers the knee and shin. Minimalistic, comfortable, it has an ergonomic fit and uncompromisable CE-certified impact protection. The ultra-lightweight construction and silicone grip panels provide both improved comfort and fit. The extended leg sock offers great support high on the thigh, relieving pressure from the calf. Features Ultra-light high-rise sock for improved fit and premium comfort Air Mesh ventilation and moisture-wicking fabric ideal for longer rides and warmer climates Hard shin guard to protect against pedal strike and side and upper thigh padding for additional protection Sizing Size Small Medium Large Extra Large XX-Large Thigh Circumference (cm)33 - 37cm37 - 41cm41 - 47cm47 - 53cm53 - 59cm Thigh Circumference (in)13 - 14. 6"14. 6 - 16"16 - 18. 5"18. 5 - 20. 8"20. 8 - 23. 2"Calf Circumference (cm)25 - 29cm29 - 33cm33 - 38cm38 - 44cm44 - 51cm Calf Circumference (in)9. 8 - 11. 4"11. 4 - 13"13 - 15"15 - 17"17 - 20" | Leatt | Knee Guard Reaflex Ultralite Ext Men's | Size Medium In Black