Professional Noise Reduction: these hard hat earmuffs offer a signal to noise ratio of 26dB / 22dB(noise reduction class), providing protection for your hearing; Noise cancelling earmuffs have been tested for noise resistance in the laboratory and are certified to CE EN352-1; Help reduce exposure to hazardous levels of noise, ideal for protection against noise arising from a wide range of applications in the workplace

Adjustable and Comfortable: these noise reduction earmuffs feature PU leather that is soft and comfortable; Safety earmuffs fit to your ears while reducing head pressure; Adjustable length ear muffs can be applied well with safety hats, giving you a good use experience

Easy to Install and Fit: these noise reduction headphones are simple to install, just plug the headset into the helmet and use; Double buckle design makes the noise proof earmuffs securely installed and not easy to fall off; The earmuffs of the helmet fit well to ensure the good sound insulation

Widely Compatible: the ear muffs for hard hats designed to be compatible with most hard hats, suitable for chainsaw helmet, forestry helmet, arborist helmet (not for full brim hard hat ear muffs); As a helmet accessory, ear muffs for noise reduction provides suitable hearing protection for the human body