quality:correction
Ball

Australian rules football is played with an ellipsoid ball, between 72 and 73 cm (28 and 29 in) in long circumference, and 54.5 and 55.5 cm (21.5 and 21.9 in) in short circumference. For women's competitions, a smaller ball size of 69 and 53 cm (27 and 21 in) is used. The ball must be inflated to a pressure of 69 kilopascals (10.0 pounds per square inch). There are no defined laws regarding what material a ball must be made from, but standard AFL match-used balls are produced by Sherrin using cowhide leather.

While there is no standard colour of the ball, red and yellow are most common and the only colours used at AFL level. Yellow is used for games beginning after 3 pm or in an enclosed stadium, due to its greater visibility, and to assist score reviews.