350ML 2LAYER GLASS COFFEE CUP

* We choose borosilicate glass to do the cup .it has very higher quality and higher transparence.a important function is heat resistant.microwave and diswasher safe. * We make the glass cup by man hand and blown and fire polishing.so the surface is smooth and very clear. The glass have two walls ,it can make your drinks keep hot or cold for a longer time.pls don't scrap the bump seal point in the bottom,the seal point prevent water or air from entering, insure it has better heat preservation effect.