For Ear Protection, Travel noise reduction, Meditation, Sleeping EarplugsCorded for convenience and to prevent loss of earplugsSmooth, dirt resistant surface for hygieneComfortable for a wide range of ear canal sizesNoise Reducing Rating: 29 decibelsDownload Attachment for Fitting Manual..

3M H7A - Ear muff -  Excellent attenuation at low and high frequency ear muff-  Patented liquid foam filled cushion for better seal and lower pressure- padded wide headband for extended wear- stainless steel head band wires- Four point suspensions helps to distribute cushions pressure evenly. Ear cups pivot for alignment and consistence f..