3M E-A-R Classic Foam Earplug Protective Clothing Bases are made of cast

Bases are made of cast iron and then powder coated

The valve flap is a bright orange

Medium (36" - 44" waist)

A remarkably convenient feature which makes this system one of the most durable and user friendly around

3M E-A-R Classic Foam Earplug Protective Clothing Bases are made of castNRR 29Corded 200 pr bxUncorded 200 pr bx 3M E A R Classic earplugs set the standard in hearing protection as the world's first foam earplugs. Constructed from slow recovery foam, the disposable earplug comes in a clean, convenient pillow pack. Reusable Pillow Pack helps keep earplugs clean when they are not being worn. Slow recovery earplug foam is flame resistant and moisture resistant Still one of the most widely used foam earplugs today The