Qzoox portable travel mug filter tea cup sports cups leak-proof travel mugs kettle- Dark Blue 500mL Easy to use drinking by just one click of the button Spill-resistant screw-on lid with flip top; platform base protects surfaces from heat Sturdy bpa-free construction; insulated double-wall sides keep contents hot for up to 37-137C Includes a stainless steel mesh infuser that can be used to hold loose leaf tea or tea bags