The warhorse of foam earplugs; these are the most commonly used earplugs in the world. Slow recovery PVC foam gives you comfort and low pressure. Lab-tested Noise Reduction Rating of 29 means offensive noise is greatly reduced. Moisture-resistant, skin-safe foam is non-irritating. Easy-to-use, wall-mounting dispenser box contains 200 individually packaged pairs. Uncorded style. USA made.