Lightweight bicycles are designed to be easy to handle and efficient for riding. They typically weigh less than 20 pounds, making them ideal for competitive cycling and long-distance rides. The use of materials like carbon fiber and aluminum helps reduce weight while maintaining strength and durability. These bicycles often feature a streamlined design, which enhances aerodynamics and speed. Lightweight models are popular among serious cyclists and racers, as they allow for quicker acceleration and easier climbing on hills. Brands like Trek and Specialized offer various lightweight options tailored to different riding styles and preferences.