certified knee brace against latest EN 1621_1: 2012 K type A ( level1) SX knee guard frames are constructed from a high performance polymeric material blend for optimized flexibility and excellent weight saving properties. Extended thigh protection. Impact resistant PU foam knee cup certified Type A, embedded in a soft comfortable padding and breathable air mesh. High abrasion resistant fabric with an over injected TPU frame structure on outer central kneecup area to improve the impact performances. Asymmetrical and slim design for comfort and fit. Excellent haptic feedback for rider due to thin construction. Plastic frames are highly perforated for maximum breathability and air ventilation (cooling effect). Dual pivot system with integrated hinge gear system.