Standard rackets are governed by the rules of the game. Traditionally they were made of laminated wood (typically ash), with a small strung area using natural gut strings. After a rule change in the mid-1980s, they are now almost always made of composite materials or metals (graphite, kevlar, titanium, boron) with synthetic strings. Modern rackets have maximum dimensions of 686 mm (27.0 in.) long and 215 mm (8.5 in.) wide, with a maximum strung area of 500 square centimetres (approx. 90 sq. in.), the permitted maximum mass is 255 grams (approx. 9 oz.), but most have a mass between 110 and 200 grams (4-7 oz.). Squash balls are 39.5 mm and 40.5 mm in diameter, and have a mass of 23 to 25 grams. They are made with two pieces of rubber compound, glued together to form a hollow sphere and buffed to a matte finish. Different balls are provided for varying temperature and atmospheric conditions and standards of play: more experienced players use slow balls that have less bounce than those used by less experienced players (slower balls tend to 'die' in court corners, rather than 'standing up' to allow easier shots). Given the game's vigorousness, players wear comfortable sports clothing and robust indoor (non-marking) sports shoes. In competition, men usually wear shorts and a t-shirt, tank top or a polo shirt. Women normally wear a skirt and a t-shirt or a tank top, or a sports dress. Towelling wrist and head bands may also be required in humid climates. Polycarbonate lens goggles are recommended, as players might be struck with a fast-swinging racket or the ball, that typically reaches speeds exceeding 200 km/h (125 mph). Many squash venues mandate the use of eye protection and some association rules require that all juniors and doubles players must wear eye protection.
San Francisco Kitchens
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