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 reuse. Noise Reduction Rating (NRR) is 33 decibels and CSA Class AL. Earplugs are test-compatible with 3M E-A-Rfit Validation System.