Full aluminum housing from the new ATH-ES55, Audio-Technica is improving the beauty of the sound quality and the outlook design of the headphone. Simple look yet durable and structural, ATH-ES55 adopts high quality driver with a large 40mm aperture. It has a perfect fit with adjustable arms for different lengths. It stays comfortable with the soft ear pads. The carrying pouch is specially designed for the new ATH-ES55.