Cooker 1.5 Liter Double Layer Stainless Steel Thermos CKR2004 : NOTE: THIS PRODUCT HAS 2 DIFFERENT STEEL QUALITY. THIS PRODUCT IS THE BEST QUALITY 304 STEEL, THE 1st QUALITY STAINLESS STAINLESS STEEL, IT HAS A DOUBLE-LAYER STRUCTURE. It has a modern and stylish design. It is based on your comfort in every environment with its ergonomic and easy use. It is durable and long-lasting that you can use at the picnic, at home, in the office, in the field, in the vineyard, in the garden, in short, in every area of your life. It has the feature of keeping your drinks hot/cold for up to 24 hours. Outside is 201 and inside is 304 Quality Stainless Steel. TEMPERATURE PROTECTION VALUES: 0-1 Hours: 96 Degrees / 6 Hours: 80 Degrees/ 12 Hours: 72 Degrees/ 24 Hours: 58 Degrees