The game is played with a ball made of Wilson Exclusive Gameball Leather in four panels that shall be inflated to a pressure not less than 12 1/2 psi nor greater than 13 1/2 psi. The circumference of the long axis shall be not less than 27 ¾ inches nor greater than 28 1/4 inches. The circumference of the girth or short axis shall be not less than 20 7/8 inches nor greater than 21 1/8 inches. The length of the long axis shall be not less than 11 inches nor greater than 11 1/4 inches. The total weight of the ball shall not be less than 14 ounces nor greater than 15 ounces. The exposed laces shall be not more than 4 3/8 inches in length and 1 1/8 inches in width.
The ball shall be painted with 1-inch white stripes around the short axis, commencing 3 inches away from the point of greatest circumference of the short axis.
A minimum of seven balls shall be used in a game and changed at the discretion of the Referee. The balls shall be kept clean and in playable condition.
The official football for a Canadian Football League game shall be the Wilson CFL Official Game Ball, which shall be inscribed with the signature of the Commissioner.
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The CFL Official Rule Book is published annually by the Canadian Football League. Any inquiries regarding the CFL Official Playing Rules may be directed to George Black Senior Advisor, Football Operations @ firstname.lastname@example.org.