The design of push switch is novel and unique. Our double-wall vacuum insulation technology keeps your beverages hot or cold until the last sip no matter what the climate outside. it's convenient during commuting, traveling and sporting. Having your beverage with preferred temperature coming out smoothly from the beautiful sleek mug , that's happy drink. 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.