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 loud events, concerts, nightclubs, sleep, water sports, flying discomfort, etc. Shatterproof carrying case included. (2 pair)