Clarity AND Protection for your ears, EARasers Musician's HiFi Earplugs allow you to focus on the different layers of instrumentation and hear vocals clearly and concisely. Perfect for musicians and handy for avid concert-goers, EARasers utilize a unique attenuation V filter to provide up to 19dB of protection in the frequencies you need it most. The result is the world's first flat frequency response earplugs. EARasers Musician's HiFi Earplugs Features Affordable, Comfortable and Re-Usable Retains Clarity while protecting your hearing Virtually Invisible soft silicone design Rivals custom molded earplugs Manufactured by a hearing aid company Whether you are a musician, attend concerts or are exposed to music played at high levels, EARasers don't plug up your ears and muffle sound like conventional earplugs. Manufactured by a 45+ year hearing aid company, and developed by their lead engineer who has been a musician for over 20 years, EARasers filter loud noise and allow you to hear at a safe, comfortable level. The EARasers soft silicone design is based on one of the most widely used hearing aid tips in the market. There is no need for expensive trips to a specialist to get custom ear molds. The Smart Seal technology conforms to the shape of your ear canal for a more comfortable fit that you can wear all day. Sizes Recommendations Research suggests that 85-90% of the general population do well with SMALL (3/4cm) and MEDIUM (1cm) sized Musician's Earplugs. SMALL - tends to work well with the majority of Women, Younger Males, and some Men who prefer a farther-in-the-ear canal fit. MEDIUM - tends to work well with Adult Males who prefer not-so-far-in-the-ear canal fit.