The Leapfrog™was designed to focus on overspeed, or maximum speed training. Like a game of leapfrog, two partners wearing waist belts are joined via a four foot Slastix®, while they take turns shuffling, back-pedalling, or engaging in a variety of sports-specific performance drills. The Leapfrog™ utilises the individual’s own speed and weight to provide a gradual resistance for their partner as the lead athlete runs ahead of the other until maximum resistance is nearly achieved. At this point the trailing runner is pulled forward in a burst of speed. As they alternate coaxing each other to spring forward, they adapt to a longer stride while improving their strength. Includes two universal swivel belts and one four foot Slastix®.