187 Killer Fly Knee Pads - Made by 187 Killer Pads for Roller Derby Skaters, Roller & Inline Skating, and Skateboarders - Schools the Competition in Quality, Comfort & Performance - Same expert craftsmanship as the Pro Knee - Contoured shape with seamless interiors for amazing fit & comfort - Quality construction and superior foam for excellent performance - Thick riveted-on caps and double-stitched ballistic nylon for durability