The FUSE DEFENSE FOAM SYSTEM features a strong yet flexible polyurethane foam inlay which not only absorbs impacts but also provides maximum comfort.

You have to measure the circumference of your leg 10 cm below and 10 cm above your knee:

32-40 your knee pad’s size is “KID”
34-42 your knee pad’s size is “S”
36-44 your knee pad’s size is “M”
38-46 your knee pad’s size is “L”
40-48 your knee pad’s size is “XL”