MASTERS Knee Protectors - OK-MFE 08345-M01 Properties: OK-MFE knee protectors provide excellent impact absorption. They do not restrict movement and fit perfectly to the body, intended for training and competition in martial arts. Filled with special foam, they perfectly protect the knee against injuries. Dimensions for sizes in cm: M L XL - upper circumference 30 33 36 - lower circumference 25 30 33 - total length 23 23.5 24