What is required of special wrestling equipment?

Special wrestling equipment is designed to enhance performance and ensure safety during the sport. Each of the listed requirements contributes to these goals, with compliance to regulations being particularly crucial.

Regulatory compliance ensures that all gear meets the standards set by governing bodies like the IHSAA, which promote fairness and protect the athletes' well-being. This includes specifications for the construction of singlets, headgear, and shoes to prevent injury and ensure uniformity in competition.

Lightweight materials are important as they allow wrestlers to move freely and perform effectively. Heavy or cumbersome equipment could hinder athletic performance and increase fatigue.

Comfort is equally essential. If the equipment does not fit well or is uncomfortable, it can distract the wrestler and negatively impact their performance.

Thus, the combined requirement for lightweight, comfort, and regulatory compliance ensures that the equipment is not only functional but also promotes a safe and fair competition environment. This holistic view is why "All the above" is the correct answer—each aspect plays a vital role in the equipment's effectiveness in wrestling.