MSA introduces sound control SH, a compatible ear muff that is designed to fit snugly into the new accessory slots on the MSA V-Gard® slotted hard hat. Sound control SH ear muffs have been tested and evaluated for quality, attenuation and effectiveness in combating workplace noise. Spring design offers low pressure and a high level of comfort. Three distinct wearing positions for ease of use. Excellent grip makes it easy to adjust the cups, even when wearing gloves. Provides maximum space for the ears inside the cup. Soft ear cup material for extended wear. Easy ear cup height adjustment.