Coca -Cola bottle mouth 3.4cm direct drinking caliber design, drinking water. Food -grade silicone sealing ring seal cup lid, fresh and odorless, shake 360 ° without leakage. Aquarius inner tendon is made of selected 304 stainless steel, which is safe and healthy, and continues to heat up for 24 hours. The bottle body uses a vacuum insulation layer, which is not hot in hot water. Can accept the color customization of the bottle body, graphic customization, and logo customization.