Macks Pillow Soft Silicone Earplugs (2pr). USA's original #1-selling moldable earplugs for ultimate comfort. These silicone putty plugs mold perfectly to your ears, blocking out noise and providing a better seal than custom earplugs. Doctor recommended for snoring, swimming, flying discomfort, and ear protection. Whether you’re catching some sleep, hitting the pool, or traveling, these soft, waterproof earplugs have your ears covered with a Noise Reduction Rating of 22 decibels.