Deadbolt Derby has been producing some of the best high impact knee pads in the business and the new generation Apex knee pads have taken it to a new level. These pads feature a high strength neoprene and elastic bands fitted with non-abrasive Velcro. This combination provides a snug and comfortable fit that avoids "derby rash" and does not stretch out like traditional elastic. High density foam forms the outer layer for protection while the inner layer is made with memory foam for comfort. The clear caps are made of ballistic polycarbonate and provide one of the highest levels of protection on the market! The combination of the new design and memory foam inner layer provide fantastic fit and flexibility.