As your child gets older and continues to improve their bike riding skills, upgrading to a bike that handles bigger and more challenging trails is a must. The Riprock Coaster 20in by Specialized gives your kid the ability to shred harder than ever before. With 2. 3in tires, the Riprock brings you phenomenal traction, more control, and heaps of confidence whether riding down the street or into the woods.If your kid is rough on sports equipment and you aren't sure about buying them an advanced bike just yet, the Riprock Coaster delivers the same advanced feel while withstanding rough use by kids. The bike features a lightweight A1 premium aluminum frame, a steel coaster brake, and a single-speed setup, combining to make the perfect mountain bike for your little one to follow you down the trail on.