I love my mug, and use it sometimes twice a day. I make coffee at 6am and it is still warm until around 9am (if you pre-heat it with boiled water your coffee can stay hot up to an hour longer).
This cup is good at preventing spills but if you don't hold it upright a bit of liquid can seep up into the lid, you'll see this when you twist the lid to the mouth piece option. This definitely isn' Read more
I would recommend this product to a friend.