This pair of Paradigm Sport Ear Hooks is designed to hold your earbuds in place during workouts or other intense activity. They feature a One-Piece Comfy-Curve molded polymer design that loops around your ears. The cord canal allows you to loop your earbud's cable over your ear to prevent movement. They are designed for use with most earbuds and the Paradigm E1, E2m, and E3m.