America's original and #1-selling moldable silicone earplugs. Mack’s® Pillow Soft® Earplugs mold very comfortably to the unique contours of any ear. The Doctor’s choice for sealing out water (helps prevent swimmer’s ear) and reducing noise with a noise reduction rating (NRR) of 22 decibels. For swimming, sleeping, studying, bathing, work, travel, loud events, flying discomfort, etc. Shatterproof carrying case included. (2 pair)