The Jump & Smile is a type of fairground ride which consists of gondolas arranged on a number of radial arms around a central axis. As the central axis rotates, the arms are lifted into the air using compressed air cylinders at pseudo-random intervals, providing an erratic jumping motion. Most versions of the ride have preloaded patterns which the arms can move in, leading to an eye-catching display. Notable Jump & Smile manufactures include Sartori, Safeco, PWS, SBF Visa and Fabbri.