3M # 7100009538 – 3M PELTOR Sound-Trap Slimline Earmuff MT15H67FB, Tactical Electronic Headset Headband. 3M PELTOR Sound-Trap Slimline Earmuff MT15H67FB, Tactical Electronic Headset Headband. WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer.