BUT it is much more durable than any rubber I have used before. It is SO hard to find closed toe sandals that are good for developing feet and these are perfect! I am happy with the purchase and quick response of this phone. So bear in mind that to achieve my two goals I need to sometimes be paired with the Bluetooth transmitter attached to my TV and other times paired with my cell phone. AIf these last 3 months they are worth it in my eyes. ?? Stunning product I have to say. Apparently I have some weird sort of alien ear canals, but even these foam versions dont work well. For my test, I did not do any sort of scrubbing or agitating of the wheels since I wanted to see what the product would do by itself. Linterfaccia può piacere come anche no.