What is the maximum diameter for stickers that can be placed on hard hats?

The maximum diameter for stickers that can be placed on hard hats is 2 1/2 inches. This guideline is typically established to ensure that the stickers do not interfere with the integrity and safety features of the hard hat, such as its ability to absorb impact. Stickers larger than this size might obstruct the protective qualities of the helmet or create distractions that could compromise safety on construction sites or industrial environments. Additionally, this size allows for the identification or branding capabilities of stickers while maintaining compliance with safety regulations. Choosing a larger diameter could risk violating safety standards, which is critical in environments where head protection is essential.