The inner liner is made of high-quality stainless steel, which will not rust and has no impact on health; Covered with silicone door, shock absorption, silence, and skid resistance; Built-in high-quality removable stainless steel tea glass, you can also drink tea outside; There are snap tea glasses around that are not easy to slip off, and there are handles for easy removal; Tailless vacuum technology, excellent thermal insulation effect, injecting hot water above 95 ℃ at normal temperature, and maintaining the water temperature at 55 ℃ after 6 hours; The hidden pull-up cup cover is convenient to carry and use when going out, and has a fashionable design. The thickness of the steel at the rim of the cup is twice that of ordinary cups on the market. The product is thicker and heavier, with a longer service life.