Hard Hat Mounted Ear Muffs Helmet Attachable Hearing Protection Safety Earmuff Professional Hard Hat Attachment Ear muff for Construction or Manufacturing NRR 27dB Noise Protection (3022HM black) - Yahoo Shopping
Python® Slimline Hard Hat Earmuffs Class 5, – 31dB – ProChoice® Safety Gear
Skullerz® 8970LED Class E Cap-Style Hard Hat + LED Light with Ratchet Suspension