It causes the brush to be misshapen afterward, splaying out the bristles. I thought the bass and other instruments were muted. If you need better sound than your smartphone or tablet can give you, especially when youre away from home, this is the Bluetooth speaker for you. Great fit and looks. Para mi esto es crucial en cualquier dispositivo que busco comprar que sea inalambrico. Highly recommend~pure bliss for the feet and so stylish. I suggest you go with a half size larger than you normally wear. Again, not durable, difficult to replace using their warranty, but the sound quality was great. There is a little arch support, but not too much that may seem excessive. I kept coming back to these.