Military issue ear plugs. Used by all branches of the military. Re-useable rubber ear plug with carry case and chain. Twist off lid offers a tool for
3M's legal battle over combat-grade earplugs
Free Combat Arms Earplugs Case Evaluation
3M loses first trial for defective earplugs against Pensacola law
Do Your Earplugs Comply With Military Standards?
3M Officials Say Troops Didn't Need to Know Proper Use of Plugs (1
Military Hearing Loss May Be Caused by Earplug Problems - Saiontz
BattlePlugs® Impulse Protection Earplugs
Orange - Genuine GI Uncorded Reusable Military Ear Plugs - Galaxy
Genuine Issue Ear Plugs With Case