Soak up the sound with Klipsch Custom-1 Noise Isolating Earphones. These high-performance, yet affordable, earphones make it possible to achieve that "front row, center stage" feeling anywhere and everywhere. Custom-1 earphones utilize dark gray patent-pending Contour Ear Gels that are anatomically designed to accurately fit inside the human ear canal. Because ear canal measurements vary, Custom-1 comes with five different washable ear gel sizes: small, medium, and large single flange designs as well as small and large double flange designs. The exclusive KG332 balanced armatures generate deeper bass, more robust midrange, and clearer high notes for that true-to-life listening experience only Klipsch audio earphones can deliver.