Into The Wind Rainbow Jet Plane Kite. Our sleek jet is powered by the wind, climbing high without all of that expensive jet fuel. A delta kite with a tunnel keel, it's a stable flier that's great for beginners of all ages. Made of ripstop nylon with fiberglass spars. 4'-1" x 3'-10" with 5-ft. streamer tails. 42" case. Wind range: 5 to 22 mph. Ready to Fly with 300' of 50-lb. line on a handle.