F4 Tempo and Flexibility Trainer

Produces a consistent swing tempo Provides instant feedback Improves flexibility for greater distance Promotes lag and improved timing Great for warm-up and the range No other golf training aid provides more benefits, simply by swinging. The F4 Tempo & Flexibility Trainer, naturally increases your flexibility, while improving swing tempo and timing. It also helps eliminate casting and over-the-top swings, which plague higher handicap golfers.