Wills Wing, Inc. (legally Sport Kites, Inc) is an American aircraft manufacturer based in Orange, California and previously located in Santa Ana, California. The company specializes in the design and manufacture of hang gliders in the form of ready-to-fly aircraft, plus hang glider harnesses and accessories. The company was founded in 1973 by brothers Bob and Chris Wills. The company sells a line of hang gliders including training and beginner gliders, intermediate and competition wings.