Superior Construction: Constructed with a food-grade 316 stainless steel inner bottom and 304 stainless steel interior, providing superior corrosion resistance and durability, and ensuring no odor. Insulation Performance: Utilizes advanced vacuum technology to keep drinks hot for up to 12 hours and cold for up to 24 hours, maintaining the optimal drinking temperature. Safety Design: Equipped with a simple one-touch opening mechanism and pressure relief function to prevent liquid splashes; a 360-degree sealing lid prevents leakage during transport. Portability: Built-in silicone handle, lightweight design, suitable for travel, school, or office use. Versatility: Offers a dual-lid function, with a removable filter for brewing and a ready-to-drink lid, suitable for various occasions. Compact Size: Measuring 22 x 7.5 cm (8.66 x 2.95 inches) and weighing 280 grams (0.617 lbs), with a capacity of 17 oz/500 ml, it is easy to carry.