Boulder Sled keeps up with the wind. A great kite for light gusty winds, the Boulder Sled is simple, efficient and lively. In light breezes, it flies low to make the most of the wind. In strong winds, it flies straight overhead, riding on top of the gusts while it waits for the next lull. Made of ripstop nylon and fiberglass spars. 3'-4" x 3'-0". 36" case. 4 to 20 mph winds. Ready to Fly with 300' of 30-lb. line on a handle.