This 3M low profile earmuff has soft, foam-filled cushions that fit comfortably yet securely over the ear. Rugged con-struction provides durability in most work environments. Sliding headband allows easy adjustment to fit a wide range of head sizes. Adjustable swivel cups enhance comfort and fit. Easy to fit and use. Tested to ANSI S3.19-1974. NRR 22 dB.**The NRR may overestimate the protection provided during typical use. 3M recommends reducing the NRR by 50% for estimating the amount of noise reduction provided.
