Sporty look and feel with excellent grip, making it possible to launch the ball with accuracy, distance and control. The number refers to Length (In Inches). The letter refers to Chuckit! ball size. Colors vary and you will receive one at random Sport Launchers come in Blue, Green and Orange. Mountain Dog provide toy products from only the most reputable brands. Whilst these items are durable in nature they can be susceptible to damage if play is not supervised.