Double Layer Glass Mug coffee,milk, tea mug cup 1,eco-friendly,heat resistant 2,easy to ... clean,reusable 3,oem can accept Double Layer Glass Mug Product description:1,Material is borosilciate glass ,which is eco ... included.2,have strainer,is good for drinking chinese tea3,transparent ,can see the tea very clear,which will give us ... regulate the degree or lightnessShow product: Double Layer Glass Mug