Crafted from excellent silicone, this sealing ring is designed to provide a secure and airtight fit for your insulated lunch box. Its and elastic material performance, making it an essential accessory for maintaining the freshness and temperature of your meals during transport. Features -Color:White -Material:Silicone -Size: 13.00X13.00X0.20cm/5.11X5.11X0.08in -External diameter: 13 -Inner diameter: 12 -Practical design: enhance the sealing performance of your insulated lunch box with a sleek design, ensuring food stays fresh and warm for longer periods -Leakproof technology: advanced sealing technology prevents water leakage, keeping your bag clean and organized during transport -Microwave-safe material: made from high-temperature resistant silicone, this seal is proper for reheating meals in the microwave, ideal for busy students and professionals -Enhanced seal: the stable round shaped seal strip provides secure and tight seal, preventing any leaks or spills -Reusable and easy to clean: designed for repeated use, this silicone ring is simple to clean, reducing waste and making it proper for daily lunches or outdoor picnics Package list: 3 x lunch box sealing rings