E-A-Rsoft™ Yellow Neons™ earplugs seal the ear canal with soft, slow-recovery foam for excellent noise reduction and comfort. Soft foam earplugs are easy to roll down and insert. Then, they expand within the ear canal for a comfortable, secure fit. Regular size fits most ear canals. Tapered roll-down foam is made of polyurethane. Cord is made of vinyl. Poly bag keeps each pair of earplugs available or accessible for re-use. Noise Reduction Rating (NRR) is 33 decibels and CSA Class AL. *The NRR may overestimate the hearing protection provided during typical use. 3M recommends reducing the NRR by 50% for estimating the amount of noise reduction provided.