Customize your racquet with the feel you want. Select from "Firm", "Medium" or "Soft" to create the perfect feel for your game. Whether you like maximum feedback and response from your racquet [Firm], maximum forgiveness and cushioning [Soft], or a perfect blend of the two [Medium], Shock Sleeve gives you more control over the way your racquet performs and feels than any racquet in history! The difference between the three Shock Sleeves is that the [Medium] is 20% better at reducing vibrations than the [Firm], and the [Soft] is 25% better at reducing vibrations than the [Medium].