Jackson Safety offers hearing protection and high-performance communication that s both comfortable and stylish. Earmuffs are designed in styles that can dampen both intermittent or constant high-frequency noise while still allowing lower-frequency sounds through. Our earmuffs are designed to offer a competitive noise reduction rating NRR a measurement that indicates how much hearing protection a unit offers. 22 NRR cap-mounted. Provides uniform headband pressure for a comfortable and secure fit. Well sized inner-hole that provides plenty of room and comfort for the ear. Features . Innovative design with soft padded headband which adjusts to fit most head shapes and sizes. Dielectric durable thermoplastic material retains shape and pressure for consistent noise reduction. Vibe 23 is ideal for use with low- level noise environments. Various noise levels available in headband and capmount styles. Clamshell packaging