Basketball sizes vary with specific age ranges and genders in mind:
Size 7 (for men ages 12+): 29.5 inches in circumference- Size 6 (for women 9+ and boys 9–11): 28.5 inches in circumference
- Size 5 (for youth ages 8 and under): 27.5 inches in circumference
- Size 4 (for children ages 4–8): 25.5 inches in circumference
A smaller mini basketball, sometimes known as size 3, features a 22-inch circumference and is used mostly for novelty toys.
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