Cortech Replacement Performance Knee Sliders Out of Tour Master came a new line of gear, Cortech, which offers all of the performance features and sophisticated innovations and fabric technologies of the Tour Master gear, but is styled for the performance and sport bike segment. Since 2002, it has grown steadily to be a major player in street apparel, gloves and riding gear. Cortech is very proud of where they are today. Just as proud as where they came from. Not bad for two guys who started out at a swapmeet, eh?Optional Performance Knee Sliders for use with Cortech race suits and pants.TPU plastic (Thermoplastic Polyurethane).Outstanding abrasion and oil resistance.Cowhide leather base.Universal Velcro&reg;