This classic vacuum insulated cup with tea leaf filter is made of food-grade stainless steel inside and outer, no metal taste and won't retain or transfer flavors. The anti-skid coating on the rim of lid let you unscrew it easily. Double-Wall vacuum insulation keeps drinks hot or cold for a long time, and the cup's surface will be always in a comfortable temperature whether it is hot or cold drink inside. The light and compact design is great for effortless transport and storage. You can enjoy various drinks everyday. It is perfect for camping, travelling or taking it to your office. Custom logo is available.