What materials should be used to pad equipment if necessary according to the rules?

Padding used on equipment is crucial for ensuring safety in sports environments. The rules specify a minimum thickness of closed-cell rubber or similar materials because they provide the required cushioning and support while being durable enough for repeated use. Closed-cell rubber is effective at absorbing impact and minimizing injuries, which is essential for protecting athletes during contact sports.

Using materials that meet specified standards—like closed-cell rubber—helps maintain equipment integrity and safety, preventing mishaps that may result from inadequate padding. While some might consider using any soft material, it may not offer the necessary protection or durability, which could lead to risks during play. Thus, adhering to the specific guideline of minimum thickness ensures that the padding effectively serves its purpose, prioritizing athlete safety.