3M H10A Peltor Optime 105 Black And Red ABS Over-The-Head Hearing Conservation Earmuffs With Liquid/Foam Earmuff Cushions (1/EA) Mops & Handles Combination gas cylinder contains 60ppm

Combination gas cylinder contains 60ppm carbon monoxide in air

*Disc Attachments

the user can switch to the cylinder for escape

* Easily replaceable heating plates

3M H10A Peltor Optime 105 Black And Red ABS Over-The-Head Hearing Conservation Earmuffs With Liquid/Foam Earmuff Cushions (1/EA) Mops & Handles Combination gas cylinder contains 60ppm3M Peltor Optime 105 Over the Head earmuffs feature double shell technology to provide effective hearing protection. For noise levels up to 105 dBA, these over the head earmuffs with double shell technology provide optimal hearing protection. The OPTIME 105 features added mass and volume, plus a unique double shell earcup design (two cups connected via a foam inner layer to reduce structural resonances) to provide the maximum in noise reduction