Band portion size adjustable in 7 steps! It is not bulky and is foldable to compact. Part equal to the head and ear I have become cushion. Size: 6 x diameter of about cord length about 190cm / ear pad 3cm / overhead a thickness of about 30-38cm / package size about length 23 x 17.5 x horizontal width 7.5cm / Product standard: driver caliber 40mm / plug shape 3.5 stereo mini-plug / 20-18,000 Hz Impedance 32 / playback frequency band