A "Single Speed" bicycle is a type of bike that has only one gear ratio, meaning it does not have multiple gears to shift between. This design simplifies the riding experience, making it easier to maintain and lighter in weight. Single speed bikes are often favored for urban commuting and casual riding, as they require less effort to operate and have fewer mechanical parts that can break. Riders of single speed bikes benefit from a straightforward riding experience, as they do not need to worry about changing gears. This can be particularly advantageous in flat areas or for short distances. However, single speed bikes may not be ideal for hilly terrains, where multiple gears can provide better efficiency and comfort.