In a test by Todays Golfer, they found that dirty grooves can cause a 5.5% reduction in ball speed, a 53% reduction in backspin, and a 20% reduction in ball height. This stresses the need to keep your grooves clean. This cleaner is perfect for anyone's bag. There are sharp and soft bristles to help get off any type of dirt, a groove pick and a retractable cord making it easy to use when attached to a bag. The pro's clean their clubs after every shot so perhaps you should too. Add this much needed item to your bag today and see the difference clean grooves can make. Note - the colour you receive may vary from the images.