Wrestling Hair Nets Where Can I Get Some Thing To Cover My Hair In Wrestling?

Where can I get some thing to cover my hair in wrestling? - wrestling hair nets

I am currently on the Varsity wrestling as a junior.
I will always have my hair after the wrestling season.
However, I have to grow my hair to donate, can not be cut during the season.
Where can I get a hair net?
Or whatever the stupid and not allowed in the game.