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:13.50X13.50X0.80cm/5.31X5.31X0.31in -It can easily put on the square or round or other shape punch lid and not easy to fall off. -This sealing ring can completely seal the mouth around of the lunch box and keep the box leak proof. -The sealing ring is easy to clean and the surface is smooth, can easily clean the dirt on the surface. -This sealing ring is safe to touch with the lunch box directly, can use it without concern. -With sturdy design with wear-resistance, it's a necessary accessory for your kitchen. Package list: 1 x sealing ring