Pro Ears - ReVO - Electronic Hearing Protection and Amplification - NRR 25 - Youth and Women Ear Muffs  - OD Green Pro Ears ReVO Electronic Ear Muffs are designed from the ground up to fit smaller heads All the same features you expect from Pro Ears, but they provide a better fit for children and smaller adults Rugged construction, Adjustable headband and Super-Sized ProForm leather ear cushions The Noise Reduction Rating (NRR) is 25 Made in the USA and One (1) Year Warranty