With a compact low-profile design offering superior levels of off-road performance during dynamic movement, the Supertech RK-10 PLASMA Knee Brace has been engineered to provide the highest level of knee support. The RK-10 is ultra-lightweight, ultra-breathable, ultra-comfortable, and ultra-protective, and features a free-floating Nucleon PLASMA knee protector encased in an innovative asymmetric forged carbon fiber frame construction for the highest levels of rigidity and superior weight saving properties. Comes in a pair. Supertech Rk-10 Plasma Knee Braces