The HOT&COLD double vacuum structure keeps the temperature of your drinks perfectly. The lid also uses a double vacuum structure, further enhancing heat retention! It can be used for both heat retention and cold insulation without using electricity. Made of durable, long-lasting stainless steel. The lid has a 180-degree rotating screw cap and a handle, making it great for outdoor use! You can safely carry it outside. Caution: Do not soak, boil, or use in a dishwasher or dryer. Size: (approx.) Width 15 x Depth 10.5 x Height 28.5cm Material: Body inside = 18-8 stainless steel; Body outside = stainless steel (acrylic resin coating); Spout/Handle = Polypropylene (heat resistance 100 degrees Celsius, cold resistance -20 degrees Celsius); Lid body = Polypropylene (heat resistance 100 degrees Celsius, cold resistance -20 degrees Celsius); Lid metal part = Stainless steel; Handle cover/Lid handle cover = ABS resin (heat resistance 80 degrees Celsius, cold resistance -20 degrees Celsius); Packing = Silicone rubber (heat resistance 180 degrees Celsius, cold resistance -20 degrees Celsius) Weight: (approx.) 0.68 kg