661 evo knee supportthe comfortable evo knee support by 661 offers unrivalled lightweight support thanks to an aluminium chassis moulded knee cap and 3 velcro fasteners featureslightweight optimal support with aluminium chassisultimate protection with moulded knee capcomfort with biofoam linersecured in place with 3 velcro closuresbuy661 protectionfrom chain reaction cycles the worlds largest online bike store