3M™ E-A-Rsoft™ Yellow Neon™ Blasts™ Uncorded Earplugs, Poly Bag 312-1252 E-A-Rsoft Yellow Neon Blasts earplugs are made from a slowly expanding, polyurethane foam material. They provide evenly distributed pressure, giving flexibility and a good seal with optimum comfort. A red flame design adds fun to serious hearing protection. Made for worker compliance The bullet design of the earplug provides high protection levels Noise Reduction Rating (NRR)*: 33 dB. CSA Class AL. Tapered shape preferred by many wearer