Thermos Stainless King Food Jar

Yes, the vacuum insulation is efficient enough to support slow cooking. You can add boiling water and raw ingredients like couscous, oats, or thin noodles, seal the lid, and let the residual heat cook them over a few hours.

The interior is constructed with non-coated, toxin-free stainless steel. This makes it completely safe for acidic foods, as there is no lining to degrade or leach chemicals over time.

No. The double-wall vacuum insulation ensures the exterior remains cool to the touch, and the sweat-proof design prevents condensation from forming on the outside, even when the contents are piping hot.

The lid is designed to be detachable, which allows you to disassemble the components for a thorough wash. We recommend taking it apart after every use and hand-washing the parts with warm, soapy water to ensure no food residue remains in the crevices.

The 300ml size is best suited for snacks, sides, or smaller portions, while the 500ml size is the standard choice for a full meal like a hearty soup, chili, or pasta dish.