The most powerful rubber from Butterfly, using innovative “Micro Layer” technology, giving BRYCE HIGHSPEED a much thinner surface structure compared to other rubbers. As a result, compression of the rubber is increased on ball impact, providing additional grip and spin. The thinner rubber layer combined with a soft sponge makes it easier to generate spin, even at high speeds. BRYCE HIGHSPEED is well suited for all-out attacking players looking for a high-powered rubber, especially for driving shots and flat-hitting. Surface: Inverted Speed: 14.5 Spin: 10.25 Hardness: 35 Made in Japan To get the most out of your rubber, it is recommended that you clean it after each use and store it properly. Using our Racket Care Kit, use one pump of the Spin Refresh on each side of inverted rubber, then use the Rubber Care Sponge to thoroughly clean it. Once it is dry, apply your protective sheets and then place it in your case. Ideally, store your paddle in a climate-controlled space and avoid extreme temperatures for extended periods of time.