The Troy Lee Designs 6400 Knee Brace ?is a lightweight and comfortable brace for any rider needing stability and protection for their knees. This knee brace has bilateral support hinges that use hyperextension stops to support and help prevent knee injury. The x-fit strap system prevents bunching that could limit movement and create discomfort while out on the trails. Adjustment upper and lower compression straps allow a customised fit. Thermoplastic knee pads are covered in an abrasion resistant material for durability and longevity. This brace is ideal for anyone riding mountain bike but is also usable for snowboarding, skiing, and motocross. Troy Lee Designs 6400 Knee Brace Features X-fit strap system Bilateral support hinges and impact absorbing base pads Thermoplastic knee protection Compression fit straps for tailored fit Abrasion resistant kneecap Moisture-wicking frame liners Sold in pairs – left and right