Material: Borosilicate Glass Operating Temperature: -20 ° C -100 ° C Capacity: 200ml Size: 19.5*7cm Gift: Thermal Insulation Holster Product description One of the greatest things about this travel tea tumbler, besides its leakproof nature and elegant design, is its excellent craftsmanship. ▶ Durable: made of double wall borosilicate glass. Thanks to the insulation layer, the external glass never gets hot. Plus, it keeps your drink hot or cold for longer. ▶ Leakproof, rustproof and odor free: premium construction stainless steel water bottle infuser and lids, 100% BPA free. No stale odors! ▶ Easy to clean: opens on both sides for hassle free cleaning. ▶ Versatile: it can be used for green, black, white, matcha tea leaves as well as herbs and fruit infused water. ▶ Safe: flat lids for extra stability, even if if the tumbler is upside down. ▶ Stylish: elegant design and nature-inspired packaging. Perfect gift idea! ▶ Sleeve included: Premium leather sleeve to protect your tumbler while you are on the go! Designed for your wellness