Product Description Healthy Safety: 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. The bottle preserves the natural tea flavor of your drink, preventing oxidation and avoiding weird smells and erosion. Heat Insulation and Anti-Scalding: The glass tea cup is made of double-wall borosilicate glass. Thanks to the insulation layer, the external glass does not get hot. It keeps your drink hot or cold for longer. The double-layer vacuum-insulated tea water bottle provides heat and cold insulation. The glass is resistant to thermal shock, preventing cracking in extreme hot or cold temperatures. Leakproof Durable: The tea infuser tumbler has a seal and will not leak even when shaken or placed upside down. It is completely leakproof, so you can carry it or place it in your handbag or backpack with confidence. The bottom features a thickened glass base, making it more durable and stable than ordinary glass. Easy to Carry Clean: The tea infuser bottle comes with a portable silicone handle, making it easy to carry on the go. Its wide mouth allows for easy cleaning with a sponge brush or duster cloth. The cup body can be disassembled into three parts, making it very easy to clean.