The FOX Launch Pro D3O Knee Guards build on the legendary performance of our existing guards and elevates the performance to new heights. Designed with input from our elite level race team, the knee guards leverage our relationship with D3O - the worldwide leader in impact reducing materials - and combines that technology with a removable hard cap for bulletproof durability and all mountain performance. The D3O CE certified build allows the knee guard to stay flexible for ease of movement and comfort, but upon impact, they instantly harden to dissipate the force of the crash. The Launch Pro D3O Knee Guards have a breathable, moisture wicking construction for all day comfort.   FEATURES: Reliable protection, exceptional comfort, and natural range of motion CE certified D3O insert for world leading impact protection Enhanced breathability through perforated non-toxic hypoallergenic Ariaprene neoprene Anatomically designed panels provide superior on bike comfort Moisture wicking back fabric keeps you cool and dry Removable/replaceable hardshell front cap to reduce snagging Materials: Neoprene 30% /Nylon 14% Polyurethane(PU)25% Thermoplastic polyurethane(TPU)18% Polyester 13%.