3M Peltor Optime 105 Behind-the-Head Earmuff, Factory, One Size;

With a 105 dBA noise-level rating, these muffs provide the protection you need for most construction and manufacturing environments. Double-shell Twin-Cup technology ensures ultra-effective broad-frequency attenuation. Low-profile, behind-the-head design enables use with most protective eyewear and nearly any helmet or hardhat. Liquid-filled foam ear cushions more easily conform to the contour of your head, ensuring a low-pressure, comfortable fit. Color-coding simplifies workplace compliance sighting. Materials: ABS Plastic Ear Cushion Material: Liquid-Filled Foam Noise Reduction Rate NRR: 29 dB Style: Behind-The-Head.