1. While the cup itself may be insulated, the cover is not. Gets very hot while the tea is steeping. 2. The cup needs a spout. It is difficult to pour the contents of the cup into something else without slopping the tea all over. The cover should be shaped to prevent heat loss through the spout. 3. The basket allows tea "dust" to get into the tea. Maybe I'm not using high-enough quality tea, but I bought it from you. 4. The high/narrow shape of the cup makes it difficult to wash the interior bottom of the cup. Tea stains, and I can't get my hand and fingers down far enough to reach the bottom. I am male, 5'4", so not a giant. Hope this helps, SC
I love this mug. It’s design is both beautiful and functional and I plan to keep it at the office because it’s set up as an all-in-one unit rather than having a separate steeper and mug to keep track of. I just think it will be easier to manage in a work environment.