FIVB

All balls used in a match must have the same characteristics regarding circumference, weight, pressure, type, and color (Rule 3.3). In FIVB World and Official Competitions, three balls are used.

The net is placed vertically over the centre line. Its dimensions and specifications are as follows (Rule 2.1): Length: 9.50–10.00 m (31.2–32.8 ft); Width: 1.00 m (3.28 ft); Mesh: 10 cm × 10 cm (3.94 × 3.94 in) square mesh

The net height is measured from the centre of the playing court (Rule 2.1): Men: 2.43 m (7 ft 11⅝ in); Women: 2.24 m (7 ft 4⅛ in); Mixed (men and women together): 2.43 m

Shoes must be flexible and lightweight with rubber or leather soles, without heels (Rule 4.3.3). Players are not permitted to wear objects that may cause injury or give artificial advantage; smooth and/or protective braces may be worn (Rule 4.3.5).

The playing court is a rectangle measuring 18 m × 9 m (59.06 ft × 29.53 ft), surrounded by a free zone which is a minimum of 3 m (9.84 ft) wide on all sides. The free playing space is the space above the playing area which is free from any obstruction.

The playing surface must be flat, horizontal, and uniform. Indoor surfaces must be of wood or synthetic material.

All lines are 5 cm (1.97 in) wide. Lines must be a light color, different from the color of the floor and from any other lines.

In each court, an attack line is drawn 3 m (9.84 ft) from the axis of the centre line to delimit the front zone. The attack line is extended beyond the sideline by 5 short lines, each 15 cm (5.91 in) long, 5 cm wide, and spaced 20 cm (7.87 in) apa...

Front Zone: Bounded by the axis of the centre line and the edge of the attack line nearest to the net (Rule 1.4.1).; Back Zone: Bounded by the back edge of the attack line and the inside edge of the end line (Rule 1.4.2).; Service Zone: 9 m (29.53 ft) wide area behind each end line. The server mu...

For FIVB World and Official Competitions, the minimum temperature is 16°C (61°F) and the maximum is 25°C (77°F). The illumination level on the playing surface must be 1,000–1,500 lux (Rule 1.2 notes).