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Depending on its specific rubber composition, a squash ball has the property that it bounces more at higher temperatures.Squash balls must be hit dozens of times to warm them up at the beginning of a session; cold squash balls have very little bounce.

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The players must alternate in striking the ball with their racket and hit the ball onto the playable surfaces of the four walls of the court.

The game was formerly called squash rackets, a reference to the "squashable" soft ball used in the game (compared with the harder ball used in its sister game rackets).

Students modified their rackets to have a smaller reach to play in these cramped conditions.

In the 1980s, construction shifted to lighter materials (such as aluminium and graphite) with small additions of components like Kevlar, boron and titanium.

Small colored dots on the ball indicate its dynamic level (bounciness), and thus the standard of play for which it is suited.

The recognized speed colors indicating the degree of dynamism are: Some ball manufacturers such as Dunlop use a different method of grading balls based on experience.

Women normally wear a skirt or skort and a T-shirt or a tank top, or a sports dress.

The National Institutes of Health recommends wearing goggles with polycarbonate lenses.

The permitted maximum weight is 255 grams (9.0 oz), but most have a weight between 90 and 150 grams (3–5.3 oz.).

Squash balls are between 39.5 and 40.5 mm in diameter, and have a weight of 23 to 25 grams.

The first squash court in North America appeared at St. In 1904 in Philadelphia, Pennsylvania, the earliest national association of squash in the world was formed as the United States Squash rackets Association, (USSRA), now known as U. Then the sport soon formed, combining the three sports together called “Squash”.

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