PRIMA PU earplugs, without cord, 200 pairs

PU earplugs without cord are made of polyurethane foam, a soft hypoallergenic material. They protect against noise with medium attenuation. Instructions of use: 1. With clean hands, roll the entire earplug into the narrowest crease-free cylinder 2. Reach over the head with a free hand, pull the ear up and back, and insert the earplug well inside the ear canal. 3. Hold for 40 seconds until the plug fully expands in the ear canal. 4. When in a noisy environment and wearing earplugs, cover your ears with cupped hands and release to check proper fit. The earplugs should be blocking enough noise so that covering them with your hands should not result in a significant difference.