Customized Logo imprint With Bamboo Lid &Tea Infuser; Dishwasher, microwave and freezer safe.Made of Borosilicate glass, Double wall design.Screw-on Natural Bamboo Lid - with 304 food grade Stainless Steel inside seal with food grade silicone, created vacuum insulated effect, prevent spilling and helps to keep beverage temperature. Thicker bottom.15oz,450ml.