Fitness Bicycles have most of the advantages of regular road bikes–lightweight frames and relatively narrow tires for efficiency on pavement–with a flat or upright handlebar. These bikes are designed for people who want a light, high-performance bike, but don’t like the drop-handlebar riding position of a regular road bike. These bicycles are sometimes called flat-bar road bikes or performance hybrid bikes. Most of them can accept somewhat wider tires, to make them suitable for use on unpaved trails. They usually have the ability to mount cargo racks and fenders, which make them good commuter bikes.