Little Leaguers to MLB athletes benefit from repetition and throwing mechanics.  Performance Pitch allows you to do exactly that without the need of a partner and most importantly, the strain on your arm.  As you throw, the towel provides resistance and allows you to feel your motion as the arm comes forward. 

Performance Pitch is a towel that has been installed in a small baseball where your fingers grip the stitches. The smaller size baseball reduces strain on the forearm that a larger baseball would cause.