Size Chart

Size Length Width Recommended Weight Upper Knee Circumference Lower Knee Circumference
M 31 cm / 12.2 in 15.5 cm / 6.1 in 45-65 kg (90-130 lbs) 30-40 cm / 11.81-15.75 in 25-30 cm / 9.84-11.81 in
L 31 cm / 12.2 in 17 cm / 6.69 in 65-85 kg (130-170 lbs) 32-48 cm / 12.6-18.9 in 28-38 cm / 11.02-14.96 in
XL 31 cm / 12.2 in 18.5 cm / 7.09 in 85-105 kg (170-210 lbs) 36-56 cm / 14.17-22.05 in 32-45 cm / 12.6-17.72 in
XXL 31 cm / 12.2 in 20 cm / 7.87 in 105-125 kg (210-250 lbs) 42-64 cm / 16.54-25.2 in 37-51 cm / 14.57-20.08 in

Measure around your knee with the leg slightly bent. If you are between two sizes, choose the larger one.