Constructed with double wall stainless steel, this travel mug is durable and has a sturdy integrated handle. Thermos™ vacuum insulation technology keeps beverages hot for up to 7 hours or cold for up to 18 hours. The DrinkLock™ sealing lid seals tight to keep beverages secure and operates with a simple touch: slide lid tab once to open and once more to close. Additionally, the lid comes equipped with a built-in tea hook that will hold tea bags or most loose leaf tea infusers for easy brewing on the go.