PERFECT NOISE REDUCTION – Provides Max Noise Reduction For The Peace, Quiet, and Sleep You Deserve! Perfect For Snoring, Shooting, Yard Work, Concerts, And All Other Loud Activities! NRR: 29dB. CAN BE USED WITH STRING – Each ear plug has a hole to apply a string. SOFT NON TOXIC SILICONE – High quality SMOTH soft silicone making them PLEASANT TO WEAR, NON TOXIC material so they are SAFE to use INDIVIDUALLY WRAPPED – Each pair is individually wrapped.WASHABLE AND REUSABLE – our earplugs can be washed and re-used multiple times, anywhere from 2 months up to a year.Colors: BlueQuantity: 100 pairs (200 earplugs)