Smooth, soil resistant skin is non-allergenic and non-irritating. Comfortable, good noise reduction effect, 1.foam earplugs, soft,comfort, noiseproof feature, washable, useful2..low cost, all day protection with high attenuation and comfort3.plugs are reshaped, tapered and rolled small for easy insertion and expand to the shape of your ear canal, to five you a custom fit.4.smooth, soil resistant ...