What is a requirement for singlet specifications?

A requirement for singlet specifications is that the legs must extend between 3 to 25 cm when worn. This specification ensures uniformity and fairness across competitors, as it allows for a standardized garment that does not unduly enhance an athlete's performance or provide excessive coverage that could interfere with the judging of the lifts. By having this range, the rules maintain a balance where athletes can wear the garment comfortably while adhering to competition standards.

The rationale behind this requirement is to prevent variations that could affect the performance metrics during competition. Uniformity in attire helps judges assess lifts more objectively, focusing on technique and strength rather than being influenced by disparate types of singlets. This stipulation is essential for maintaining the integrity of the sport.

In contrast, while singlets may be designed in ways to enhance comfort and modesty, they should not provide excessive support that could alter lifting performance. The other options regarding thickness and materials are not consistent with the specific regulations on sizing and dimensions necessary for powerlifting competitions.