Specialized Center Line Guard Stopper prevents the diaphragm of the earphones from falling within the ear canal and keeps your eartips centered for maximum sound quality and comfort. Studies show you can use the various sizes based on your activity and the amount of hold and isolation you would like. For example while resting a great hold is not needed like as in gym activities. Specialized material conforms easily to the shape of your ear canal which makes for a comfortable fit that reduces ear fatigue and stays in place during activities. Apply pressure and with a circular motion, twist with one hand clockwise and with the other the opposite direction, until the ear tip has fully covered the Driver of the Earphone. Dear Customers, If you are unhappy with your purchase for whatever reas.
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