1. Health and hygiene: food grade silica gel, healthy and harmless, healthy and low carbon, can be recycled. 2. Humanized design: There are convex corners around the preservation cover, which is convenient to take and use. 3. Good sealing: good sealing, no water leaking upside down, no cross contamination between food. 4. Cold or hot: can support the refrigerator, can support the oven. 5. Anti-slip inner ring design: Anti-wear inner ring design, good adsorption performance, good preservation effect. 6. Handheld design: Humanized handheld design is more convenient to use. 7. Eco-friendly: The material is good, which can protect the environment in a friendly way.