Traction, control, confidence, and fun''the Riprock 20 is the perfect bike for your kid to start hitting the trails.While there are many notable features that make the Riprock awesome, it's the 2.8-inch tires that provide a high degree of, well, shred-ability''delivering exceptional traction, control, and confidence for riding rough, off-road sections and city streets alike. And when you combine the big tires with sturdy 20-inch wheels, mechanical disc brakes, and seven-speed shifting, you have the perfect mountain bike to get your little Ripper out on the path to a lifetime of fun rides.