High-quality stainless steel The thermos flask is made of 316 stainless steel, a durable material that greatly reduces the risk of breakage and has excellent rust resistance, ensuring that the mug remains intact and beautiful for a long time. In addition, there is no odour to your drink, is BPA-free and not harmful to health. Whether hot water, ice water, tea, coffee or juice, it can be stored safely and offers you a pure taste experience, so you can drink every sip with peace of mind . Thermal insulation performance The mug is equipped with a highly efficient thermal insulation layer and excellent vacuum insulation and features advanced insulation technology. It can maintain the temperature of drinks for a long time, keeping hot drinks can be kept warm for more than 12 hours, and cold drinks can be kept cold for up to 18 hours. Whether it's a hot summer day or a cold winter, it can keep your drinks at the right temperature and meet your drinking needs at any time, and the cup always stays dry, without water droplets. Wide range of applications The precision lid is made of stainless steel and high-temperature resistant materials with a 100% leak-proof, food-safe silicone seal for an excellent seal. Whether on outdoor hikes, long-distance trips, strenuous fitness sports, exciting moments skiing, driving or cycling, you can use it without worrying about spills, and it is a reliable companion for all kinds of activities. Convenient to use The cup is very easy to clean, simply rinse with water and wipe with a clean cloth. The larger opening not only makes it easier to refill drinks at any time, but also makes it easier to thoroughly clean the interior and ensures residue-free hygiene. Easy to carry: The cup is lightweight and equipped with a lanyard. Whether you're commuting, catching up on something, exercising or heading to the office, you can easily carry it with you and enjoy a drink anytime, anywhere, holding it comfortably in your hand and carrying it without any weight. Perfect combination of fashion and practicality The cup has a fashionable design, looks beautiful and has a practical function at the same time. This combination of fashion and practicality makes it an ideal gift for friends and family. On birthdays, celebrations and other special moments with friends and relatives, not only show your taste, but also show your concern for them with a gift full of love. VACUUM INSULATED WATER BOTTLE: Thanks to vacuum insulation technology, it stays hot for over 12 hours and cold for up to 18 hours. MATERIAL: Made of 316 stainless steel with no metallic odours. BPA-free, sturdy and corrosion-resistant, safe and healthy. Ideal for your hot/cold water, coffee and juice. USES: 100% leak-proof food-grade silicone seal. Perfect for outdoor activities, travelling, fitness, skiing, driving, cycling and other occasions. EASY TO CLEAN: Rinse with water and dry with a clean cloth. The larger opening makes it easy to clean and refill with water. EASY TO CARRY: Equipped with a lanyard, you can easily carry your drinks.