Versatile to be used as the coffee cup, tea cup, water cup, beverage cup, milk cup, also the beer cup. With Ceramic inside, your coffee should taste how you intended. Unlike stainless steel, our ceramic interior coating keeps your brew pure and free of lingering odors, oils, and "old penny" tasting notes. Double wall vacuum srainless steel outside keeps drinks ICED over 8 HOURS & HOT over 8 HOURS. Thanks to this flask, you can easily make your tea and carry it with you at any time.