Classic solid color vacuum insulated cup can be started at the click of the bounce switch. The double-wall vacuum insulation technology keeps your beverages hot or cold until the last sip no matter what the climate outside, and the cup's surface will be always in a comfortable temperature whether it is hot or cold drink inside. The design of bouncing switch is novel and unique. The durable paint coating matte finish means your tumbler is grip easily and fingerprint-free, also won't fade, peel or crack through extended use, so you can take this tumbler to anywhere. Custom logo is available.