Mongoose Invert Boy's Freestyle Bike (20-Inch Wheels) Stylish 20-inch freestyle bike for off-road and trick riding Sturdy, high-tensile aluminum frame and 48-spoke wheel set Front alloy caliper style brakes and sure-stopping rear U-brakes 2-bolt stem on seat post for easy adjustments; soft padded saddle Light alloy pedals with large contact area for foot stability