Review on Portable Double Walled Glass Tea Infuser Travel Mug - Tea Tumbler with Infuser, 10oz/300ml - Ideal Gift for Men, Women, and Tea Enthusiasts by Damon Fields

I have tried to use this but it is very poorly designed and sold with false advertising. Despite the double walls, the outside of the jar is too hot to touch, let alone unscrew the HOT metal lid to sip tea. I made sure no leaf particles were blocking the seal before attaching it, and when I turned it upside down, hot water spurted out of the leak between the lid and the brewer. This item is actually dangerous to use and if I were seriously burned I would sue the company that manufactured and distributed it. When I tried to remove the cap from the tea infuser to clean it for return it did NOT unscrew - I have to send it back with the used tea as I can't get it out. As far as false advertising goes, it looks like you could attach the infusion to the bottom of the cup as a kind of coaster, it's not. You also can't use the cap without the infuser attached to the top, which makes no sense. DO NOT BUY THIS!