The Haro Boy's Shredder 18 Sidewalk Bike fills the void for kids that are too big for a 16" but too small for a 20". The low profile alloy frame and 18" alloy rim wheels will stand up to the toughest days. It also sports a 1 1/8" threadless headset for fine tune steering. It has a rear coaster brake and linear pull v-brakes so that young riders can learn the ropes. It also includes a full pad set to minimize accidents.