Audio-Technica M50s Professional Studio Monitor Headphones with Straight Cable Bundle with Carrying Case, Headphone Amp, and Polishing Cloth Collapsible design ideal for easy portability and convenient storage Proprietary 45 mm large-aperture drivers with neodymium magnet systems Closed-back cushioned earcup design creates an outstanding seal for maximum isolation Adjustable padded headband for comfort during long mixing/recording sessions Exceptional audio quality for professional monitoring and mixing