Design Philosophy Protection – it’s in our DNA. An expanded line up of protectors ensures every type of mountain biker is catered for. We work with the best riders to develop our products including the first family of DH, the Athertons and Scottish legend Danny MacAskill. The MT500 Lite knee protectors provide fully certified protection, in lightweight yet durable fabrics for all day pedalling comfort. D3O LP1 InsertThe LP1 Protector used in the MT500 Lite Knee Pad is the most advanced, breathable protection made by D3O. The highly vented geometry increases the insert\'s breathability by 45% whilst retaining EN1621-1:2012 level 1 certification. Its lightweight, low-profile design and soft, flexible properties make this an unobtrusive and comfortable high performance protector. 90 Day Satisfaction guaranteeSo confident are we in this product that, if you are not entirely satisfied with it then we offer a no-quibble refund or replacement policy within 90 days of purchase.