Features:

- THE KOSS PLUG REVOLUTIONISED THE WORLD OF IN-EAR HEADPHONES

- THE FIRST OF ITS KIND, STEREO, NOISE ISOLATING, IN-EAR HEADPHONES THAT DELIVER THE KIND OF ACCURATE ACOUSTICAL REPRODUCTION AND ISOLATION TYPICALLY FOUND IN HIGH END, CLOSED STYLE HIGH FIDELITY HEADPHONES 

- A DYNAMIC ELEMENT POSITIONED JUST OUTSIDE THE EAR CONNECTS TO A TUBULAR PORT STRUCTURE THAT INSERTS INTO A SOFT, EXPANDABLE CUSHION

- THIS SOFT CUSHION EXPANDS FOR A CUSTOM FIT WITH EVERY LISTENING EXPERIENCE

- THE CUSHION ALSO IMPROVES ISOLATION, PLUGGING OUT AMBIENT SOUNDS AND ENHANCES DEEP BASS AND TREBLE CLARITY 

- COMBINE THE KOSS PLUG WITH YOUR FAVOURITE MUSIC AND IT INSTANTLY BECOMES THE ULTIMATE ACCESSORY FOR ON THE GO LISTENING