They will transfer weight forward onto your calf muscles, achilles tendons and soleus muscle to improve your leap and quickness with amazing results! Manufacturers tests show the Jumpsoles are very effective, increasing 40yd dash times up to 0.2 seconds and increasing vertical jump 5-10 inches. Jumpsoles are the world's most advanced plyometric training platforms which attach to your own shoes. Players can wear them whilst playing tennis, non marking and extremely hard wearing! wear them indoors or out. Comes with a full set of instructions. Great for team use. Colour: Black. Order by men's and womens shoe size. Wt 5lbs.

Subject to a flucuating price - please check with Overspeed at time of ordering.