Whether for you tennis is a serious business or you just like the occasional knock around, the Get Fit For Tennis Pack can help you get the best from your game. It helps you rehabilitate gently from injury and gradually increase your strength, power and fitness to improve your stroke, reaction times and agility. It comes with a green Dyna-Band® and a tougher purple band so, as you become stronger, you can continue to challenge yourself. The handy accessory pack helps make the bands easier and more comfortable to use. They're especially helpful if you have a weak grip or painful fingers.