If you’ve suffered from swimmer’s ear infections, you know how painful and inconvenient they can be, especially while on a long-awaited vacation. Mack’s Moldable Silicone Putty Waterproof Earplugs seal out water to help prevent the fungi associated with swimmer’s ear. Mack’s Earplugs are USA’s #1 Doctor Recommended Earplugs for helping prevent swimmer’s ear infections. Trust the brand that doctors trust. Be confident in your ear protection with Mack’s Swimming Ear Plugs.