product 1.Healthy & Safty:The tea bottle is made of high quality glass,which is BPA free and extremely safe for both boiling and ice water.It is safe, healthy and sanitary without water leakage.It can preserve the natural tea flavor of your drink to prevent oxidation and do not get weird smell and erosion. 2.Heat insulation and anti-scalding:The glass tea cup is made of double wall borosilicate glass.Thanks to the insulation layer, the external glass not gets hot. Plus, it keeps your drink hot or cold for longer.Double Layer vacuum insulated tea water bottle, heat and cold insulation.This glass water bottle is resistant to thermal shock, preventing cracking in extreme hot or cold. 3.Leakproof & Durable:The tea infuser tumbler with seal, will not leak even if shake and placed upside down.It is completely leakproof, so you can carry it or place it in your handbag/backpack with confidence.The bottom adopts a thickened glass bottom, which is thicker and more durable than ordinary glass, and stands more stable. 4.Easy to carry&Clean:Easy to carry&Clean ,the tea infuser bottle with portable silicone handles, it is easy to carry on the go. Easy to take, easy for travel glass tea infuser .Wide Mouth It is convenient to put a spong brush or duster cloth into the bottle for cleanning.