Ball
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The size of the ball should be no larger than 81 centimeters (32 inches) in circumference and weigh no more than 226 grams (8 ounces). It should be as close as possible to the regulation-size volleyball. The ball shall be spherical in shape and made of flexible leather or synthetic leather with a bladder inside made of rubber or a similar material. Its color may be a uniform light color, or a combination of colors. The inside pressure shall be 0.30- 0.32 kg/cm2 (4.26 to 4.61 psi). In Modified Team Competition a lighter weight, leather or synthetic leather, modified volleyball may be used.
Court
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While it is recommended that a regulation 9 meter x 18 meter ( 29 feet 6 inches x 59 feet) court be used, the Special Olympics modification allows for the service line to be moved closer to the net, but no closer than 4.5 meters (14 feet 9 inches). If a regulation size court is unavailable, then modifications may be made to allow for play in a safe manner
Nets
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Used to separate the teams during play, men's net height of 2.43 meters (7 feet 11 5/8 inches) is used for regular and Unified Sports. Women's net height of 2.24 meters (7 feet 4 1/8 inches) is used for Women's and Modified Team Competition.
The official net is 1 meter (39 inches) wide and 9.5 to 10 meters (31 feet 6 inches to 33 feet) long (with 25 to 50 cm [10 inches to 19 ½ inches] on each side of the side bands), made of 10 cm (4 inch) square black mesh.
At its top a horizontal band, 7 cm (2 ¾ inches) wide and made of two-fold white canvas, is sewn along its full length
The official net is 1 meter (39 inches) wide and 9.5 to 10 meters (31 feet 6 inches to 33 feet) long (with 25 to 50 cm [10 inches to 19 ½ inches] on each side of the side bands), made of 10 cm (4 inch) square black mesh.
At its top a horizontal band, 7 cm (2 ¾ inches) wide and made of two-fold white canvas, is sewn along its full length
Antennae
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These are vertical flexible rods attached to the opposite sides of the net at the points the net crosses the sidelines. An antenna is 1.80 meters (5 feet 11 inches) in length, and the top 80 cm (32 inches) extends above the net and is marked with 10 cm (4 inch) stripes of contrasting color, preferably red and white.