In water polo, there are various sizes of water polo balls. Each size is assigned to a specific level, or levels. This guide will explain the different sizes of water polo balls and the different levels that each is used for.

Size 1: Splashball

• Most commonly used in introductory water polo camps where boys and girls aged 8 & under try out water polo for the first time.
• The small size of this ball makes it easier for the young, beginning players to handle the ball.

Size 2: Junior

• Used by 12 & under girls and 10 & under co-ed.
• The smaller size of this ball is most appropriate for this age range as young players learn basic water polo skills.

Size 3: Intermediate

• Used by 14 & under girls and 12 & under boys.
• This transitional sized ball is designed and volumetrically engineered to provide a smooth transition to the Size 4 ball, to improve skill development, and to increase quality of play.

Size 4: Compact (previously called Women's)

• Used by 14 & under boys; 16 & under girls club, 18 & under girls club, and all high school girls; NCAA women; and International women.
• Regulated Circumference: Between 0.65 and 0.67 meters.

Size 5: Men's

• Used by 16 & under boys club, 18 & under boys club, and all high school boys; NCAA men; and International men.
• Regulated Circumference: Between 0.68 and 0.71 meters.

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