Clement Cycling Clement Frj Tire with 29''X2.25 Folding Clincher 60A Rubber 120Tpi, Black An all-purpose 27.5" and 29" cross-country tire designed for a wide variety of conditions and surfaces Its high-volume casing provides shock absorption on rocks and roots and its segmented, wide-spaced knobs give traction in most environments FRJ is the airport code for Frejus, France, home of the world-famous Roc d'Azur mountain bike festival