SingleTEA Glass Tea Mug w/ Stainless Steel Infuser & Ceramic Lid - 15oz / 450ml Glass tea mug w/ stainless steel infuser and ceramic lid. Dishwasher safe; Made of heat-resistant borosilicate glass. Perfect tea mug infuser for office & home. Capacity: 15.0 oz / 450 ml. Comes in a carton gift box.