Review on Double Tea Stainless Infuser Filter by Srinivas Johnson

I bought this to replace my David's Tea Nordic mug. One is ceramic and keeps the temperature very well. What I love about this mug is that it's completely cool outside even with boiling water. However, I thought the double wall would keep the liquid hotter longer, but that's not the case. In fact, my tea cools down pretty quickly. Also, I've never had a residue on the bottom of the cup with my Nordic cup. Sometimes I add collagen and fiber powder to the tea. But with this cup, it kind of collects at the bottom, making it empty. Otherwise everything is great and looks really cool.