California Code of Regulations
Title 4 - Business Regulations
Division 2 - State A thletic Commission
Chapter 5 - Wrestling Rules
Article 3 - Ring
Section 804 - Ring Construction and Equipment

The size, construction, and equipment of wrestling rings shall be as approved by the commission.

The ring floor shall be padded to a thickness as approved by the commission. A one-piece wrestling mat or soft padding may be used with a top covering of clean canvas tightly stretched and laced to the ring platform.

Any mat or padding and canvas covering which has been used for boxing matches shall not be used for wrestling exhibitions until the mat or the canvas covering has been washed and is free from resin.

The promoter shall keep the mat or padding and covering in a clean and sanitary condition.