Pro Ears ReVO Passive Ear Muffs For Smaller Heads & Ears Pro Ears ReVO NRR 26 Passive Ear Muffs are designed from the ground up to fit smaller heads. All the same features you expect from Pro Ears passive hearing protection but they provide a better fit for children and smaller adults. Everyone's head and ear size is different. One size does not fit all! Features: - Rugged construction, Adjustable headband and Super-Sized ProForm leather ear cushions - No metal parts to break and potentially scratch a young child or become a swallow hazard - Dielectric construction - Suitable for a moderate noise environment, at the range, rock concert or race track - Simple height adjustment requires no tools to remain fixed during wear - Snap-in ear cushions make replacement quick and easy