The Trek Wahoo 26 Path is a lightweight children's bicycle that is designed to help kids gain confidence and improve their technique. It has a resistant aluminum frame that cushions bumps and jumps, and soft, wide tires that allow the rider to roll on the asphalt with speed and traction. It also has eight gears to climb steep slopes and rim brakes to slow down speed on descements. My son used it from 10-15
9-13 is a good range depending on size