Featuring Power Strings & Mega Power Holes technologies, the Wilson Jammer racketball racket offers explosive power to let you beat your opponents with ease. The racket is best suited to beginners & intermediate players & has a head size of 107in 2 (690.3cm 2). The included vibration dampener reduces vibration to the hand to ensure a firm & comfortable grip, whilst Extreme Power Frame technology further enhances power. The Jammer is constructed from graphite alloy for optimum playability & durability & comes with a non-slip, super adhesive Exact Tack grip to boost your game.