Wrestling ring

In Japan, it is also common to see mixed martial arts fights contested in a wrestling ring, owing to Japanese MMA's roots in puroresu.

[1] Wrestling rings are generally composed of an elevated steel beam and wood plank stage topped by foam padding and a canvas cover.

These ropes are held up and tensioned by turnbuckles, which, in turn, hang on steel ring posts, which also support the frame.

The first known regular use of hexagonal rings in professional wrestling was for the Japanese lucha libre based promotion Toryumon 2000 Project which held its first show in 2001.

[5] Hexagonal rings have been used for special occasions such as Lucha Libre AAA World Wide's annual Triplemania event.

A ring used by Detroit's Big Time Wrestling in 1972
The corner structure of a WWE ring, showing the attachment of the ring ropes to the ring post via the padded turnbuckles
A hexagonal wrestling ring, which was used by American promotion TNA Wrestling in the past. AAA in Mexico occasionally uses similar rings.