M32X MARK 3 Tactical Communication Hearing Protector for FAST MT Helmets - I.W.A International Inc
MAXIMUM SAFETY Cap Mount Ear Muff NPR 25 Hearing Protection MXCEM25-VPD4 - The Home Depot
3M X5P3E Peltor Black Model X5P3E/37279(AAD) Cap Mount Hearing Conservation Earmuffs, English, 14.573 fl. oz, Plastic, 4.6" x 8.2" x 6.7": Amazon.com: Tools & Home Improvement