Refill bottle for 3M One-Touch earplug dispenser Refill bottle contains 500 pairs of 3M™ Classic™ Earplugs Earplug dispenser serves as a reminder to wear hearing protection and make earplugs readily available in noisy areas for full time users and visitors alike. Moisture-resistant—helps maintain a consistent expansion time, even in humid environments Textured surface helps keep earplugs in place