The Nanovessel is our newest accessory to add to your portable espresso toolkit. It is a 3-in-1 vacuum insulated flask - Tumbler, Tea Infuser and Water Tank. It is equipped with a mesh filter, so you can brew tea directly into it. How to brew tea with your Nanovessel:Step 1: Place tea into the mesh filter basket. Step 2: Pour hot water over your loose leaf tea. Step 3: Turn upside down to let steep. Step 4: Flip back over and remove entire top part of Nanovessel and pour into your container of choice. Step 5: Enjoy! SHOP NOW