I was looking for something that would make making barley tea easier, and I found this product that had the following features: 1) heat-resistant glass, 2) the container is large enough to fit my hand inside (so I can wash it quickly with a sponge), 3) the capacity is large enough to hold the water that has been boiled in the T-fal 1.2L kettle, 4) the lid is simple (no dismantled parts or gaskets!), I was looking for something that would allow me to do the following: 1. I found this in a store and bought two. It's easy to wash quickly with a sponge because you can put your hand inside the main body. The lid also has a simple structure without a gasket, which is good. There is no spilling when pouring. (I put it in the refrigerator pocket, but be careful of the amount of water. If you put in too much, the seal will leak when you open and close the door. (I don't feel inconvenienced because it's fine if you keep the water level just below the line (hollow) on the upper stainless steel part. ) I'm free from the hassle of washing the kettle, the seal, and the main body using a brush, and cleaning the brush after use, so I'm comfortable every day. This time, I bought a third one for making cold infusions of black tea, green tea, and herbal tea.