Features: Wide Use: Low-profile passive ear muffs for huntings, working, and studying Noise Block: NRR 21DB safety ear protection for working place noise, shooting range, and racing Adjustables: Adjustables ear defender fit all adults kids, suitable for firework, concerts, and traveling Foldable: Portable and folding noise reduction headphones, easy to carry in backpacks or suitcases Safety Earmuffs for Ear Protection: Sound dampening high density foam prevents harmful sound from reaching your ears, and the ear plugs (If you feel not noise reduce enough)providing you with the maximum protection to meet your requirements,making your ear more safer. Notice: 1. Actual color may be slightly different from the image due to different light effect 2. Please allow 1-3cm deviation due to manual measurement Description: NRR:21DB