ReVO Electronic - Purple RainThe ReVO Electronic in Purple Rain has a rating of NRR 25 and designed from the ground up to fit smaller heads and ears. ReVOs is an electronic ear muff with all the same features you expect from Pro Ears hearing protection. They provide a better fit for children and smaller adults, equaling better hearing protection because of the better fit. Better amplification ensures you remain aware of your environment. Designed to be more comfortable so kids