PROVIDES A NOISE REDUCTION RATING OF 29DB. MADE FROM SLOW RECOVERY PVC FOAM. MADE FROM SLOW RECOVERY PVC FOAM. SLIGHTLY SOFTER THAN MOST OTHER PVC EARPLUGS FOR EASE INSERTION AND COMFORT. AN ESSENTIAL MUSICIAN TOOL. 60% OF INDUCTEES INTO THE ROCK AND ROLL HALL OF FAME ARE HEARING IMPAIRED, PROTECT YOUR HEARING TODAY. HELPFUL FOR THOSE WITH SLEEP ISSUES, AIRLINE TRAVEL, AND DAY-TO-DAY NOISE ISSUES.