The SKLZ Hurricane Category 4 Swing Trainer maintains the snap-back action of the original Hurricane with a sleeker design, additional power band (4 total) for fast-back action, and a high visibility impact head. Designed for baseball or softball swing training, the SKLZ Hurricane Category 4 Baseball Swing Trainer allows batters to develop swing power, technique and speed with a stationary or moving target. The swing trainer is light enough to be portable, but at 34 pounds it is built solid and sturdy.