Application: It can be used to seal and keep fresh all kinds of food, such as vegetables, fruits, meat, etc. Random color,Clear or Blue. Specification: Material: Silica gel Color: White,Blue Quantity: 6 Pieces Size (Diameter) : 6.5cm, 9.5cm, 11.5cm, 14.5cm, 16.5cm, 21cm (2.56", 3.74", 4.53", "5.71", 6.5 ", 8.27 ") Heat resistance: - 40 ° to 230 ° Description: High elasticity, strong adsorption, sealing and leak-proof. Soft and malleable, square cutlery is also suitable. Low temperature resistance to freezing, so that food storage convenient, saving space. High temperature resistance, can be boiled in boiling water, disinfection, can also be used in the microwave oven and dishwasher. It is recyclable and environment-friendly. Note: Due to manual measurement, please allow for small size error. Due to the difference in lighting and display, the product color may be slightly different from the picture. Please understand. Package includes: 6 x Silicone retention covers