Good vibrations, brand rough rider beverage mug. It's good for damping and insulating with the softbase which slso grabs at your cup holder. Made for atv, tractors vehicle in general. In nice clean condition,the mug doesn't leak the  sip holes are soft gasket sealed, and also the twist cap has a gasket. Keep your beverage hot or cold for hours. The base is soft and has some distance from the inner to the bottom.  Look at my photos for measures.  Selling as shown