... ,comfort, noiseproof feature, washable, useful2..low cost, all day protection with high attenuation and comfort3.plugs are reshaped, tapered and rolled ... for easy insertion and expand to the shape of your ear canal, to five you a custom fit.4.smooth, soil ... humilities.6.this silica earplug virtually eliminates pressure on the ear canal, making it extremely comfortable for long-term usage.7 ...