Hard shell and 3DF ventilated impact foam 3D design for optimal fit with specific left and right sides Slim shin plate that also fits inside boots Full shin extended length – EXT New improved hard shell sliding surface CE tested and certified as impact protection: Knee and shin EN1621-1 Total Leatt® protection score of 20 points Weight: from 600g (1.32lbs) pair Please look at our sizing chart for best fit: S/M-XXL