the Co-op Cycles REV CTY 24 bike gives young riders all the performance of an adult bike, scaled down to match their size and designed to build their confidence and skill. Aluminum frame is lightweight and durable. Shimano drivetrain provides 21 versatile gearing options for hills, flats and rolling terrain. Linear-pull rim brakes provide responsive braking power. All-terrain tires are mounted on sturdy rims for excellent performance on and off the road. https://www.rei.com/product/143170/co-...