WHY FILTERED EARPLUGS? While conventional earplugs block out more noise at some frequencies than others, resulting in a low-fidelity, muffled sound when worn, our filtered earplugs utilize high-fidelity filters with a known frequency response to protect your ears without sacrificing audio quality. This helps preserve audio fidelity for conversations, music, and other applications. ISOLATION TAILORED FOR YOU: Interchangeable filters allow you to choose your level of protection. Use the isolation chart to select the filter that's right for your application. The filters are interchangeable, and you can add additional filters to your order or purchase them separately later. 5dB FILTER: Reduces damaging higher frequencies while allowing most sound through; ideal for swimming or activities that require ambient awareness COMFORTABLE AND REUSABLE: Featuring a sleek, low-profile design and made out of soft silicone, universal earplugs can be worn all-day and reused for years. 3 SIZES + CARRYING CASE INCLUDED: Each set of earplugs comes with a compact plastic case, 3 sizes of earplug tips, and one pair of filters. Universal earplugs feature high-fidelity filters that protect your ears without sacrificing audio quality. Choose your preferred color and one of five available filters for the ideal level of isolation. The filters are interchangeable and you can add additional filters to your earplug order or order them separately later.