product description 1.Bright colors: Vibrant yellow & magenta color is highly visible from a distance to help ensure employee compliance and hearing safety; it also helps prevent loss or misplacement. 2.EXCELLENT NOISE REDUCTION: Self-Adjusting foam earplugs expand in the ear upon insertion to create a secure seal for excellent hearing protection in loud workplaces and jobsites. 3.IDEAL FOR SMALLER & LARGER EARS: Small size of earplug delivers optimal fit and ear protection for smaller ears, but low pressure foam expands to fit virtually any size ear and ear canal 4.COMFORT & HYGIENE: Contoured T-shape allows for easy insertion and removal; Smooth, soil-resistant, closed-cell foam skin helps prevent dirt build-up. 5.RECOMMENDED INDUSTRIES: farming, chemical, construction, law enforcement, manufacturing, military, mining, municipal, oil & gas, pharmaceutical, steel, metal, transportation.