... skin is non-allergenic and non-irritating Comfortable, good noise reduction effect noise reduction device--------Wireless earbuds 1.foam earplugs, soft,comfort ... for easy insertion and expand to the shape of your ear canal, to five you a custom fit.4.smooth, soil ... and humilities.6.this earplug virtually eliminates pressure on the ear canal, making it extremely comfortable for long-term usage.7 ...