Noise cancelling ear cushions you wont need to make the sound louder to drown external sounds deep and clear full spectrum sound at any level of sound no need to expose your ears to unnecessarily high sound pressure levels in order to enhance sound lightweight lies light on top of the head and does not sqeeeze the sides swivel earpieces and a flexible rim fold up neatly to carry in your bag when you travel an adjustable rim fits any head optimum size of earpieces and a rim fit close