Design PhilosophyRobust, multi layer PU foam inserts provide impressive protection against knocks, scrapes and bumps. Impact testing has shown energy absorbing qualities to rival the best on the market.Fully Opening DesignThe SingleTrack Knee Protectors have been designed with a fully opening construction so can be put on and taken off without removing your shoes. This easy on and off means they can be quickly whipped off for the ups to keep your knees cool and then easily put back on ready to tackle the technical trail back down to the valley.