To keep your ear plugs in top condition, we recommend refreshing your memory foam tips once every six to eight weeks. This will ensure you're getting the most protection out of your ear plugs. These foam earbud tips offer the perfect seal from the outside world and let you enjoy the sound quality of your favorite tunes. Made from ultra-soft and maximized 'bounce-back' memory retention, these earbud covers ensure a snug fit that allows you to wear your ear plugs for a longer period of time. The pack contains 3 pairs of hypoallergenic foam tips that comfortably ease into any individual ear shape. The foam earbud tips are compatible with Flares Jet earphones and earHD models of ear plugs.