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Question: Will it work if you put a teabag in the infuser? From a novice tea drinker, but loving it!
Document: This mug is amazing. It keeps my drink hot through just about the whole work day. Its also a very convenient way to make tea with the interchangeable infuser and sipping lids (and they are very easy to clean). Thinner teas (like Rooibos)seep through a little bit, but its definitely a great mug. I bought my first one through Teavana for a bit more and my boss had to have one, so this is actually the second one we've purchased.
This tea infuser/travel mug is perfect for the tea purist who travels. It fits into car mug holders. The interchangeable parts include a handy infuser, lid for drinking and  water tight cover. The thermos holds heat well.I saw this product rated well in Good Housekeeping magazine and I agree. It's the best traveling tea infuser I've ever found.
After trying many different mugs these are the best I found, and the only ones that - with the lid on - will keep coffee (or  tea) hot for a long, long time, without danger of spilling the contents on your briefcase or car. They are a bit small but really work.
This is a much better product than other tea travelers out there. Just be careful you don't burn your mouth on the first use! That's what I did. If you want to drink your tea right away don't put the sipper or cover on and let your drink cool for a few minutes first. It fits very nicely in the cup holder in my car. I use this tea traveler almost every day and I'm really happy with it.
As someone who is on the go most of the day, I really appreciate a good hot cup of coffee or tea and this cup is the answer. My drink will stay hot for hours and I never have to worry about any leakage.
This is one of my favorite products!!! I use this everyday. I love making loose tea and usually its a pain to carry on the go. This mug is extremly solid and I have had it stay warm for over 8 hrs! !
Good day --- I've been looking for a 'small' insulated 'coffee cup' for quite some time. This thing is perfect for my uses - and you can do tea in it too!-- Comes with both 'caps' a 'cap' with the tea strainer, and a cap for drinking (small hole) - plus a lid to keep either from spilling. (Perfect for free coffee at the Veteran's Hospital.)
This tumbler has excellent thermal abilities, keeping hot drinks hot for several hours, and ice is still unmelted twelve hours later. It is extremely compact, so fits a purse or jacket pocket easily. The tumbler comes with three tops, all of which screw on for added safety. The first is a cap with a drink-thru hole, insuring that it will not slop when in your car holder and you want to just grab for your java.
Still could be better in this area, but I've never seen a mug that has awesome sipping ability while the lid is off.
I've taken this coffee mug around the world, into Iraq and back and it is durable, reliable and works as advertised keeping coffee hot with no leaks in your backpack or travel bag for hours.
Answer: Yes, it will work with a teabag as well, and in fact probably better since the leaves are all contained in the bag.  You wouldn't get any loose leaves in your mouth when drinking the tea.  Welcome to the tea drinkers' world.  I would suggest for you to try different kinds of tea - white, green & black.  And don't worry about the caffeine in it, it's not as potent as coffee and there are always herbal alternatives.  Enjoy!