The Skullerz 8880 Hard Hat Mounted Earmuffs are designed for comfort and noise reduction both on and off the job site. These noise-canceling earmuffs seamlessly integrate into Skullerz Hard Hat and Safety Helmet dedicated side accessory mounting slots for a secure fit. The earcups are designed for all-day, comfortable wear and are also adjustable and can be tilted up, down or stored onto the side of the hard hat or safety helmet to create a customized fit. The earmuff's ABS outer construction is durable for long-lasting protection in tough environments and the polished stainless steel wire arms offer smooth adjustment and increase longevity of the earmuffs. Cap-Style. Material(s): ABS; Foam; Stainless Steel; Ear Cushion Material: Foam; Noise Reduction Rate (NRR): 26 dB; For Use With: Skullerz Cap-Style Hard Hats, Face Shields, Safety Helmets.