小学生打篮球应该用几号球

Understanding basketball sizes is key for choosing the right equipment. Size 7 is the standard for men's competitions (600-650g, 75-76cm circumference), Size 6 is for women's (510-550g, 70-71cm), Size 5 is for youth (470-500g, 69-71cm), and Size 4 is for children (300-340g, 56-57cm). Knowing these specs helps in making the right choice.