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 ReVO Kids Full Spectrum Electronic Safety Ear Muffs - BQRB3ZAES