MSA Cap Mounted Earmuff 
Cap Mounted Earmuff Sold As: Each
NRR: 27 dB
Designed specifically for very high noise levels, the powerful muff/cap model is ideal for airfields, power plants and other areas with intense noise. The HPE muff/cap model provides the highest rated protection available for low-frequency environments. A padded headband and super-soft ear cushions guarantee all-day comfort while ensuring full-time protection. Spring design offers low pressure and a high level of comfort. Other features include three distinct wearing positions, easy to adjust the cups, and a wide headband with ventilated padding provides firm and comfortable fit.
Noise Reduction Rating: NRR (dB) 27*
Features: Spring Design Offers Low Pressure and High Level of Comfort, Three Wearing Positions* For Use With Front Brim Hard Caps* Meets/Exceeds ANSI S3.19-1974, CSA Class A Note: Cap Model Noise Reduction Rating listed is for medium V-Gard helmets only.