With a multifunctional cup. This product has 2 capacities, 620ml and 1000ml respectively. This product is our liner is made of PC design is the double detachable detachable liner, liner to the 4 part, an outer liner, liner, net, lid. When you use it, put tea or coffee into the inner container, pour the boiled hot water, and control the tea water according to your favorite taste. And then only hand gently wave, so that the inner liner and outer bile automatic separation, water naturally flowing into the cup inside. Both the inner liner and the glass are made of high temperature resistant materials, which are easy to use and easy to understand. It's a patented product of our company. Our 620ml is black and purple, and 1000ml is black. Available for customer selection.