Experience enhanced support and protection with the Alpinestars RK-1 Plasma Knee Brace in Black and Red. Designed for all forms of off-road riding, this knee brace features a lightweight and breathable construction that provides maximum comfort without compromising safety. The Nucleon Plasma knee protector, encased in a hybrid frame, ensures superior structural integrity while allowing flexibility at critical strap areas. Ideal for reducing the risk of knee injuries, this brace includes replaceable segmented knee cups and a four-point hinge system that adapts perfectly to your knee's articulation. Stay secure on your rides with this environmentally friendly and innovative product. Features: * USDA Certified Material: Bio-based eco-friendly and sustainable impact absorbing material. * Thermoformed Padding: Soft-touch padding ensures the highest levels of rider comfort while keeping the knee brace securely in position. Replaceable as a spare part. * Custom Fit Padding: Soft-touch thermoformed condyle padding comes in different thicknesses for a customized fit. Replaceable as a spare part. * Secure Straps: Equipped with four individual straps backed with a non-slip material to ensure the knee brace remains securely in position while riding. * Robust Buckles: High tensile strength buckles are robust while still being flexible for easy strapping and adaptivity. * Easy Lock System: Central buckles are easily locked into the closed position by a keyhole snapping system. * Internal Buckle Mounting: Inner-knee central buckles are mounted internally inside the frames to avoid contact with the bike. * Knee Protector Rating: Knee protector certified to EN 1621-1:2012 LEVEL 1 for impact protection.