Work out and get wasted simultaneously with the amazing Mug Muscles Exercise Mug. George Hillhouse has designed this incredible and innovative Mug. Simply a beer mug with the built-in gym-quality muscle-building grip exerciser. The mug is BPA-free. So enjoy your frosty brew with the Exercise Mug and start working on your hand arms muscles. It is all about sippin’ and rippin’ at the same time.