*- Noise reduction earmuffs are protective devices designed to attenuate harmful sounds by sealing around the ear with foam-padded, hard plastic cups.

Key Features:

*- Passive Earmuffs: Utilize acoustic foam and solid shells to dampen sound and block noise, particularly effective against high-frequency sounds.

*- Active Earmuffs (Noise Cancelling): Use electronic microphones and speakers to generate inverse sound waves, actively cancelling low-frequency noise (e.g., machinery) while allowing safe environmental sounds or communication.
Construction: Feature an adjustable headband and soft foam-filled cushions that create a tight, acoustic seal around the skull.