Premium Quality, Seiko Manufacturing --- Our thermos flask is made of high-quality stainless steel, rust and wear resistant, durable and unbreakable. Keep the drink odor free and long-term temperature lock. Superior powder coated finish, fashionable and timeless, sweat proof, easy grip Convenient Drinking --- One click opening, easy to open and clean. Round cup mouth fit the lip shape. Push up to close the lock, and push down to open the lock. Prevent accidental unlocking and pack the flask in the bag without leakage worry Leakproof --- BPA free screw lid, along with the silicone seal ring avoid water leakage. Rubber bottom helps to prevent the coffee mug from sliding and tipping over. Slim cup body fit in most standard cup holders Keep Drinks Cold or Hot for Hours --- Double wall, vacuum sealed design, reduce heat conduction, keep drinks cold or hot up to 6-8 hours Easy to Take Away ---Lightweight, leakproof. Pack your insulated mug in your bag, without any worrying about spillage or leak. Take it anywhere you want go, to office, school, travel, parties, and etc. Enjoy the nice day and nice beverage