... ,heat resistant 2,easy to clean,reusable 3,oem can accept Double Layer Glass Mug Product description:1,Material is borosilciate ... very clear,which will give us a good mood when we enjoy tea4,Oem service offered, customer logo and brand can ... wall of the cup which looks very nice5,we accept small order ,sample offered, but we do not pay shipping fee6,supple different kinds ...