The Launch Pro D3O® 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 top tier mountain bike performance. The D3O® CE certified build allows the mtb 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 Perforated Ariaprene™ neoprene for enhanced breathability Designed for superior pedal efficiency and on bike comfort Moisture wicking back fabric keeps you cool and dry Removable/replaceable hardshell front knee cap to reduce snagging D3O® CE certified insert for impact protection