Most Visible Color – Meets Ansi’S Highest Luminescent Factor Requirement Of 70% For Hi-Viz Safety Apparel. Bright, Easy To Locate Color Allows More Efficient Compliance Checks And Fast Acquisition Under Sudden, Dangerous Noise Conditions. High Performance Noise Reduction – With A High Noise Reduction Rating (Nrr) Of 32 Decibels, These Noise Blocking Earplugs Help Reduce The Potentially Harmful Effects Of Loud Noise, Such As Gunfire Extreme Comfort – Made With Super Low-Pressure, Slow Release, Comfortable Foam. Mack’S High Visibility Soft Foam Earplugs Are Perfect For Extended Wear In Situations Where Extreme Comfort Is Paramount. Multi-Purpose – Great For Tactical Training, Hunting, Target Shooting, Skeet And Trap Shooting, And Loud Events.