This is literally the BEST mug I have ever used! It keeps your hot drinks hot for a long period of time & it is leak proof, has a very good mechanism where you press a button to allow yourself to drink. The design is slick & is very durable, I have dropped it many a times & it has stayed as it should, no cracks as it is made of steel. Its super easy to clean. Its my favourite thing.

Had this mug for years let a friend borrow it and she lost it. Never again. I loved this mug. It kept everything so warm and it always never spilled. Best travel mug ever.