The “Dynamic Duo” of speed training, allowing an overload/underload protocol that dramatically improves golf strength and clubhead speed.
Sizing is based on driver clubhead speed, with the following sizes available:
- Junior: below 80 mph
- Adult Light: 80-90 mph
- Adult Regular: 90-100 mph
- Adult Strong: 100-120 mph
- Adult Extra Heavy: 120+ mph











