The answer to this question depends on which character you are playing. Each character has their own unique outfit that they wear in the game. You can find more information about each character's outfit by doing a quick search online. Sometimes, cosplayers will also create their own unique versions of the squid game players' outfits. For example, you might see a cosplayer wearing a different color than what is shown in the game. So, if you are wondering what they wear in Squid Game, the answer is that it depends on the character you are playing.