Slim Clean helps remove dirt, dust and oil that accumulates on the surface during normal play. Slim Clean is a non-toxic foam cleaner that will rejuvenate the rubber surface to its natural tacky state. The rubber surface is highly delicate and this specially formulated cleaner will not harm the surface. Simply apply a small amount to the rubber surface and clean with a sponge. It is advised to clean your rubber before you store your racket and to further prolong the life of the rubber, add a protective film and store your paddle in a racket case. Keep your racket out of heat. Anywhere your racket comes in contact with intense heat, such as the interior of your car. About Butterfly - Hikosuke Tamasu founded Tamasu Co., Ltd. in the small town of Yanai City, Japan in 1950. This was the beginning of a company career which is almost unique in table tennis. A renowned international for Japan, Tamasu fulfilled his dream of a lifetime when he made his hobby his profession. At that time, he could hardly imagine that he would make Butterfly the leading brand worldwide. Creativity, durability, and a profound technical knowledge meant success. 0ver and over again he looked for new possibilities in order to optimize techniques by innovative playing material. Tamasu realized that each player is different and has strengths and weaknesses. By offering individual playing material Tamasu wanted to help players right from the beginning to emphasize their individuality. Since 1983 Butterfly has its own training and research center in Tokyo. Highly qualified scientists co-operate with world class players and coaches for the development of rubber and blade technology. Butterfly's rubbers and blades are used by more than half of the participants at World and European Championships.