www.safetyandhealthmagazine.com/articles/reusable-earplugs-2

Reusable earplugs

March 1, 2011
JETZ reusable earplugs are brightly colored and feature extra-soft material that provides all-day comfort by gently sealing the ear canal without excessive pressure. The unique cord attachment with locking loop helps keep the optional braided cloth cord securely in place. The plugs have been independently tested to ANSI S3.19-1974, NRR27.

Moldex-Metric Inc.