HIGH VISIBILITY COLORS LASER LITE: Vibrant magenta yellow color is highly visible from a distance to help ensure employee compliance and hearing safety; it also helps avoid losses or misplacements EXCELLENT NOISE REDUCTION (NRR 32): Self-adjusting foam earplugs expand in the ear upon insertion to create a secure seal for excellent hearing protection in noisy workplaces and construction sites IDEAL FOR SMALLER AND BIGGER EARS: The earplug's small size provides optimal fit and hearing protection for small ears, but the low-pressure foam expands to fit virtually any size ear and ear canal < p>COMFORT HYGIENE: Contoured T-shape allows for easy insertion and removal; Smooth, dirt-resistant closed-cell foam skin helps prevent dirt buildup; 30 pairs of earplugs per box RECOMMENDED INDUSTRIES: Agriculture, Chemical, Construction, Law Enforcement, Manufacturing, Military, Mining, Municipality, Oil Gas, Pharmaceutical, Steel, Metallurgy, Transportation< /p>