This stainless steel vacuum insulated cup is compact and portable, no metal taste and won't retain or transfer flavors. It can be started at the click of the bounce switch, and its unique leak-proof and anti-ironing rim design make it safer. 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.