Mack's Shooting Foam Ear PlugsMacks 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, Macks 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