Hi Shaziya, Thanks for your question! Based on the details from the product description, the Stanley Quencher H2.0 Tumbler is designed to keep your beverages hot or cold for extended periods. It can keep liquids hot for up to 7 hours and cold for up to 11 hours. However, it's important to note that this tumbler is intended for drinks like water, iced beverages, or cold drinks, as well as hot beverages.
You can safely use it for coffee or hot water, but it is best to avoid overly hot liquids that might exceed the recommended temperature for its insulation features. Just make sure to use the rotating lid and the appropriate straw or cover position to avoid spills.