The second type, which is not pressurized, has a solid core. It lasts longer which is good for those who practice in the courts regularly but has to be replaced due to wear and tear. Tennis balls are classified into regular duty, extra duty and high altitude. This is because of the various surfaces this game is played namely, clay, grass, hard and indoor. If you are a tennis aficionado, one warehouse shop that will surely cater to all your tennis equipment needs is the Tennis Warehouse. This cyber shop does not only provide you with almost everything you need for your game, but also offers free tips and advice regarding tennis-related subjects, such as stringing your racquet. Any person is capable of being affected, but tennis elbow is in general noticed in two sets of patients, namely: Blue-Collar Workers People who use their hands in working, manual laborers, they are in danger of being affected tennis elbow. Occupations that may lead to tennis elbow include plumbing, painting, gardening, and carpentry works. The flat serve, topspin , and the slice are the three basic serves that you need to know and practice so that you can use them in an appropriate time when you play the game. The flat serve or basic serve is when you hit the ball on a flat trajectory making moderate spin. Next, the topspin is done by doing high arcing trajectory and with high strong bounce. This proves that the Egyptians were the first to have actually played this ball game as part of their religious traditions. Eventually, the concept of this ball game reached Southern France in 800AD brought by the influence of the Moors. The first Europeans who played the early version of tennis were Christian monks. The very first sneakers were born in 1893. The materials that was used was canvas. It was made for boaters to eliminate the use of dress shoes on the deck. Well, this is just going to be a simple list of what to shop for, how and which. We have to know the different materials that are being used to manufacture tennis shoes.