High Quality, Seiko Manufacture --- Our thermos bottle is made of high quality stainless steel, anti-rust and wear-resistant, durable and unbreakable. Keep the drink free of odor and lock the temperature for a long time. Premium powder-coated finish for timeless style, sweat resistance and easy grip Convenience to drink---one button to open, easy to open and clean. The round mouth fits the shape of the lips. Push up to close the lock, push down to open the lock. Prevent accidental unlocking, put the flask in the bag, don't worry about leaking Leak Proof --- BPA free screw cap, and a silicone seal to avoid water leaks. Rubber bottom helps prevent coffee mug from sliding and tipping over. Slim profile fits most standard cup holders Keeps Drinks Hot or Cold for Hours --- Double-wall vacuum-sealed design reduces heat conduction and keeps drinks hot or cold for up to 6-8 hours Easy to go --- Lightweight and leak-proof. Pack the thermos in your bag without worrying about spills or leaks. Take it anywhere you want , to office, school, travel, party and so on. Have a great day and a great drink