Casaware Trio Tea Infuser - Filter - Travel Tumbler with 2-way Leaf Compartment 12 Ounce (Stainless) 2  x 2  x 8-Inch Stainless steel 12 ounce BPA Free tumbler, leak proof with lock button Double wall vacuum Insulation provides (6) six hours hot & cold temperature retention A patented 2-way leaf compartment built inside of the lid. The tumbler can be used for both loose leaf tea and other infused beverages. Hand Wash INFUSER: Add tea leaves to the tea leaf compartment. Turn mug upside down & wait for tea to brew. FILTER: Switch the filter flap to cover the drinking hole. Brew the floral tea infusion. Filter the floral buds, and enjoy!