Secondly, there are strict requirements for color. For example, if the color of table tennis is white, then the color of the clothes you wear can't be white, which means that the color of your main suit is obviously different from the color of table tennis, so that the audience can enjoy it better visually when watching the game, otherwise the color of your clothes will hinder the audience from watching the game more or less.
In addition, there are strict rules about advertisements on clothes. For example, it is strictly stipulated that advertisements can only be printed on the back of sweatshirts. This is against the rules. If you force yourself to wear such clothes, you may even be disqualified from the competition.
Not only that, any signs or decorations on the front and side of sportswear, as well as any items worn by athletes, should not be too conspicuous or reflective, thus affecting the opponent's line of sight. This is also against the regulations. In addition, opponents should wear different colors of clothes, so that the audience on the field can better distinguish.
There are many other rules, so I won't list them here. If you are interested, you can find some information about this.