3DF ventilated impact foam with hard shell sliders Side impact protection Pre-curved design for ultimate function and comfort all day long Premium comfort using MoistureCool and AirMesh wicking fabrics New anti-slip calf band and silicone grip lining New ventilated Neoprene sleeve Silicone printed and adjustable non-slip leg straps CE tested and certified as impact protection: Knee EN1621-1 Total Leatt® protection score of 21 points Weight: from 530g (1.17lbs) pair