The Launch Pro D3O® Elbow Guards leverage Fox’s relationship with D3O® - the worldwide leader in impact reducing materials - and combines that technology with a removable hard cap for bulletproof durability and top tier mountain bike performance. The D3O® CE certified build allows the MTB elbow 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® Elbow Guards have a breathable, moisture wicking construction for all day comfort.