Enjoy powerful bass along with class leading clarity and a spacious presentation, extreme comfort, and the convenience of a single cable and folding headband. The supra-aural design (ear cups rest on your ears) uses ear cups that swivel to fit the shape of your head/ears and a padded, lightweight, adjustable headband that is comfortable for long term wear. The cable is designed without a split, connecting only to the left ear cup, eliminating cable tangle and frustration. Sound leakage is reduced due to the closed back design of the ear cups, so you won't disturb your neighbors like an open backed headphone. Travel with a headphone has never been easier, as the headband folds and the ear cups swivel into a compact size perfect for storage and travel during those rare occasions you will not be listening to the HT-21.