For noise levels up to 105 dB, Optime 105 earmuffs provide ultra-high and ultra-low frequency attenuating hearing protection with twin cup design that minimizes resonance. Features wide, softly padded headband and individual stainless spring steel headband wires for comfortable alignment to the head. Wide, replaceable ear cushions are filled with newly developed soft foam for excellent sealing properties, good fit, and low-surface pressure. Outer layer consists of specially developed, hygienically textured plastic, allowing for ventilation and durability. Weight: 9.3 oz. tested to ANSI S3.19-1974. CSA Class A certified. 10pr/cs.