Califone Best Hearing Protector is ideal for using in an industrial arts areas, factories or other loud areas where exposure to noise is hazardous and is designed for blocking potentially damaging external noises by completely covering the adults outer ear with 37 dB noise reduction rating for extra protection. Bright yellow safety hearing protector features an adjustable full sized ABS plastic earcups that is able to hold up to continued usage in high-use settings and a rugged polypropylene headstrap with folding head band for added comfort.