Butterfly Challenger Attack rubber is a pimples-out rubber ideal for quick attacks. However, due to the amount of spin that can be generated (more than traditional short pips rubbers), you can also use it for a controlled allround game as well. With this versatility, players of a variety of levels and playing styles can benefit from what Challenger Attack has to offer. With a sponge that is just barely softer than the Tenergy line, one also has exceptional feel on their shots, helping to place pushes and attacks right where they are needed. Surface: Short Pips Out Speed: 9.5 Spin: 6.5 Hardness: 35 Made in Japan To get the most out of your Butterfly Challenger Attack rubber sheets, it is recommended that you care for it properly. Ideally, store your paddle in a closed case in a climate-controlled space. You should also avoid extreme temperatures for extended periods of time, as this can damage the rubber and drastically affect how it plays. If this happens to your rubber, there is no way to fix it and it must be replaced.