Alpinestars Bionic Flex Knee Protector Black Red - Size S/M\n\nErgonomically profiled Nucleon Flex Technology protection held securely in position via an elasticated top strap and silicon hems, the Bionic Flex Knee Protector incorporates comfort padding with a soft-touch stretch mesh preventing heat build-up The asymmetric and lightweight design ensures the Bionic Flex Knee Protector provides optimal levels of comfort and freedom of movement.\nKey Features\n\n--Highly convenient and time-saving slip-on design with elasticated hems and silicon printing to prevent slippage and to help keep the protector securely positioned.\n--New design Nucleon Flex Technology protectors are highly perforated and secured on the outside of the sleeve for excellent breathability and ventilation.\n--Additional side foam padding for additional coverage.\n--Abrasion resistant fabric front panel for increased durability.Protection\nKnee Protector - En 1621-1:2012 Level 1. \nConstruction\n\n--Extremely light;