Product features:
1, tightly sealed and firm handle; Cover knob, exquisite design; The box is thick, shockproof and durable; Fashionable style, fashionable color and exquisite packaging.
2, double-layer advanced stainless steel structure, good thermal insulation performance, easier to clean and more hygienic.
3. Thermal insulation performance: the room temperature is 20 degrees, the food temperature is greater than or equal to 95 degrees, and it is greater than or equal to 50 degrees after sealing for 2-3 hours.
4, function: fresh, cold and warm, excellent performance; Rice, soup and liquid food are easy to carry and wash.
5. The rotating bayonet design of the lunch box cover has better sealing performance; The handle is comfortable, easy to hold and portable, allowing you to fully enjoy the warm life.
It is a food container made of double-layer plastic or stainless steel plus vacuum layer or heat insulation layer. The top is covered and sealed tightly. The vacuum layer or heat insulation layer can delay the heat dissipation of food inside, thus achieving the purpose of heat insulation.
The insulated lunch box is developed from the thermos bottle, and the insulation principle is the same as that of the thermos bottle. There are three ways to spread heat: radiation, convection and transmission. The silver liner in the heat preservation barrel can reflect heat radiation, and the vacuum layer or heat insulation layer of the cup can block heat transfer.