The contestants essentially wear white T-shirts under green track suits with white trim. They're recognizable as Squid Game characters and not just joggers thanks to a three-digit white number (between 001 and 456) on their backs and on the left side of the front of the jackets, as well as on their shirts.
How do you make a Squid Game Guard outfit?
https://www.youtube.com/watch?v=bA13IP5bJ48
How do you make a Squid Game mask at home?
https://www.youtube.com/watch?v=ml6rfsjk3Yo
How do you make a Squid Game guard mask?
https://www.youtube.com/watch?v=cA-whEdohxE
What kind of mask is used in Squid Game?
black balaclava mask
How do you make a Squid Game mask out of paper?
https://www.youtube.com/watch?v=7i464AQ6QQU
What jumpsuit did they use in Squid Game?
They wear red hooded jumpsuits that zip up the front, with black belts. No numbers for them, but they do wear freakish black face masks with either a triangle, circle or square on the front. And they carry threateningly large weapons.