Unicycle is a vehicle with a seat and frame mounted above a single wheel. The rider causes the unicycle to move forward or backward by rotating two pedals with the feet. Unicycles are ridden by children and adults and are used primarily for recreation. People often juggle objects or perform other stunts while riding unicycles.
Unicycles first appeared in the late 1800’s as part of circus acts and similar entertainments. These early models were handcrafted by their riders. In the mid-1900’s, several bicycle companies began manufacturing unicycles in the United States for sale to the general public. Today, some bicycle stores sell models in standard sizes with seats as high as 6 feet (1.8 meters) above the ground. Unicycles more than 6 feet high and specialty unicycles must still be handmade. Although most unicycles are operated by foot pedals, some unicycles, used primarily for transportation, are motor driven.
