Product Description Item Number | 10061271 MSA HPE Earmuff™ NRR26dB Designed for very High noise levels Ideal for: Airfield, Power Plants, etc. w/ intense noise Padded headband Super-soft ear cushions / 3 position wearing So comfortable you will always want to wear it Head band offers force adjustment for individual fit Design provides protection in tough, dirty environments NRR 26dB Applications: Airfields, Power Plants, Firearms Shooting Range. Color: Gray/Black Features: Spring design-allows for low pressure and high level comform For use with Front Brim Hard Caps Meets/Exceeds ANSI S3.19-1974, CSA Class A (1) per box NRR - Defines, Noise Reduction Rating Range of noise reduction ratings for existing hearing protectors is approximately 0 to 30 Higher numbers denote greater effectiveness NRR is third party rating certified in accordance with ANSI S3.19-1974, EN352 and meets CSA Class A.