These boundaries are termed as sidelines and baselines. There are two smaller rectangles on the interior that serves as the service boxes. For the singles game, the court measures 78 feet (23.77 meters) in length at the sidelines and, 27 feet (8.2 meters) in width at the base lines. While for the doubles, the court is made of 9 feet (2.7 meters) wider by making the base lines 4.5 feet (1.37 meters) longer in both directions. You see, early tennis skirts, WERE long skirts. In the 1800's it was outrageous to have skirts worn above the ankle. If you have period films in the 1800's setting, you would be able to observe that most women wore corsets and empire cut dresses. The main purpose of these designs were to 'hide a woman's legs! The fact of the matter is that Feder bear is the official Beanie Ty Baby that is exclusively produced for the ATP Tennis. All proceeds from the Feder bear Beanie Baby sale which costs eight dollars each will automatically go to the UNICEF program. For those interested for the same Feder bear, this item will be distributed this coming season of the holidays worldwide. It develops your speed whenever you do your sprints and side steps to hit the ball. 7. It strengthens your legs through the number of jumps and lounges you do in the court while chasing the ball. 8. It generally develops your body coordination when you move from one position to the next or whenever you need to adjust your whole body to hit the ball. 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. Someone who will play the game indoors should sue regular duty tennis balls. However, designs have evolved into sexier, more comfortable and trendier designs. The club of Wimbledon requires players to wear all-white. However, the pros have always gotten away with wearing whatever color and design they want. There is a lot of designs to choose from that would surely fit your taste.