If youre a downhill mountain biker searching for the highest level of protection, the NoShock Knee Pads Heavy Duty are the perfect choice. Their Slytech Foam protective elements feature NoShock technology to provide the greatest impact energy absorption performance (Level 2) while reducing weight and enhancing mobility. Anatomically-shaped Neoprene sleeves maximize comfort. Additional padding below and to the side of the knee enhance protection. Straps at the top and bottom secure them in place and their front panels made with DuPontKevlar fibers provide abrasion and puncture resistance. Get the confidence you need to ride like a pro and have fun. DuPont and Kevlar are trademarks or registered trademarks of E.I. du Pont de Nemours and Company.