PURPOSE: To develope a stable kite with a favorable maneuverability by eliminating a turbulence at the trailing edge and wing tip to eliminate a vibration of the kite.

CONSTITUTION: A diagonally narrow and long hole is opened at the trailing edge of a sail 1, and the hole is reinforced by a mesh 2. Such a hole is put at several locations depending on the size of a kite. At the wing tip, a triangular sail 3 is attached, and a bag-shaped cloth is attached from the peak (a) of the triangular sail 3, and a batten 4 is put in the bag. A triangular hole is opened between a leading edge 5 and the batten 4, and the periphery is reinforced by a cloth. A triangular hole is also opened between the battens, and the periphery is reinforced by a cloth.