The Stainless King series blends modern technology with a dash of the past, providing reliable products that stand up to the demands of everyday life. This travel tumbler is perfect for keeping drinks hot or cold whether you're headed out on an adventure or the daily commute. It features Thermos Vacuum Technology for maximum temperature retention, keeping liquids hot for 7 hours or cold for 18 hours. The tumbler's stainless steel interior and exterior makes it durable, and the DrinkLock lid helps prevent spills when on the go. Its single cup serve compatible and has a handy tea-hook for tea bags and most loose leaf tea infusers, plus it fits most vehicle cup holders too! With a 5 year guarantee, this flask will be ready for your next adventure for years to come! Specifications THERMOS vacuum insulation technology for maximum temperature retention, hot or cold. Durable stainless steel interior and exterior Cool to the touch with hot liquids, sweat-proof with cold Fits most vehicle cup