Mack’s Hi-Viz earplugs’ bright color (ANSI fluorescent yellow-green) is the most visible color to the human eye making them the superior solution for: 1.Compliance Checks(monitoring hunters and shooters on the range): Utilizing the most luminous color, Mack’s Hi-Viz earplugs allow for faster, more efficient, and more accurate compliance checks, especially at greater distances and under different light and weather conditions. 2.Fast acquisition for critical use:Mack’s Hi-Viz earplugs give hunters and shooters the best chance to quickly visually locate for immediate use when under unexpected or sudden shooting situations. 3.Finding if dropped or lost:Superior luminescence makes Mack’s Hi-Viz earplugs easier to locate. Utilizing the brightest color to the human eye gives hunters and shooters the best chance of finding earplugs if lost.