Ключевые слова: background, blue, calm, care, case, color, comfort, comfortable, container, ear, earplug, earplugs, equipment, health, hear, hearing, holder, industrial, light, loud, medical, nobody, noise, object, orange, pair, plastic, plug, plugs, prevention, protection, protective, quiet, reduce, relax, rest, safety, silence, sleep, sleeping, soft, sound, space, text, turquoise, volume,