This is a lunch box lid sealing ring, made of silicone material. This silicone ring is suitable for the most brand's lunch box lid, elastic and flexible, thus can be applied in to square or round lid easily. This sealing ring make no interspace between the lunch box and lid, you can can keep food easily. Features -Color:White -Material:Silicone -Size:13.50X13.50X0.20cm/5.31X5.31X0.08in -Note: Outer diameter 13.5cm, inner diameter 12cm - Made of good silicone material makes the sealing ring has high elasticity to efficient sealing. - Flexible and supple, this silicone sealing ring is easy to install and remove, seal perfectly. - Reusable silicone material makes the sealing ring touch with the food directly, and practical. - Effective sealing, safe and reliable design, , you can lunch box more easily. - It's simple and convenient installation, practical using, also a practical lunch box accessories. Package list: 2 x Silicone Seal Rings