Ideal for Pro IEM (In Ear Monitor) Use, Alllows listening to custom-crafted mixes of vocals and stage instrumentation during live performances. Flexible Ear Hangers, Easily folds and maintains its shape, insuring a superior fit for each individual ear. Wide dynamic range with clear and accurate sound reproduction, Large Calliber16mm Dynamic Drivers. Three sizes provided to fit different ear types, Hybrid Silicone Rubber Earbuds. Supplied Soft Case, Protective storage.