With a feather-light wing loading of less than 3-1/2 oz. per sq. ft., Fusion is best flown indoors, or on calm days. All precision-cut 3mm sheet foam construction. Wing has symmetrical airfoil with flat ailerons. Flies all F3P maneuvers with grace and precision. The color step-by-step photo instructions take you through every part of the construction and give great advice on CG and exponential settings for best performance. All decorations are pre-printed on the foam, no painting required. Not difficult to build but requires care and a light touch during construction. Once built and rigged the airplane is sturdy and durable. For 4-channels: Aileron, Elevator, Rudder and Throttle.