Etymotic

Etymotic Research ER20XS High Fidelity Reusable Earplugs - Low Profile Fit and Waterproof Case - Noise Reduction Ear Plugs for Concerts, Musicians, Raves, Sporting Events & Festivals - Universal Fit

Eargasm High Fidelity Earplugs with Blue Filters - Reusable Noise Reduction Hearing Protection Ear-Plugs with Carrying Case for Concerts, Festivals, Raves, Musicians, Live Music, Sporting Events

Loop Experience 2 Ear Plugs – Stylish Certified Hearing Protection for Concerts & Festivals, Live Events, Musicians, Sports, DJs and Nightlife – 17dB Noise Reduction Earplugs (High-Fidelity)