There’s a lot to cover with wrestling singlets: cut, fabric, use, etc. All the major bases are covered below.
The Classic Cut
These look and feel just like the originals. One of the above is.
Drop Neck Cut
These are still a classic cut, which fetish designers will take to the extreme to allow easy access at the front.
Assless / Back-Zippered
Do I need to explain what this is for?
Codpiece / Front Zippered