Parachuter swoops between to buildings. Wingsuit flying is a relatively young sport but it progresses at an incredibly fast pace. Wingsuit flying or wingsuiting is the sport of flying the human body through the air using a special jumpsuit, called a wingsuit, which adds surface area to the human body to enable a significant increase in lift. Modern wingsuits, first developed in the late 1990s, create the surface area with fabric between the legs and under the arms. Wingsuits are sometimes referred to as birdman suits.