Are you looking for a professional, yet thermal bottle lid sealing ring? Are you in search of a sturdy, trustworthy lunch box lid sealing ring that can do multiple jobs at once? , ! Our professional lunch box lid sealing ring must meet your need. Features -Color:Black -Material:Silicone -Size: 6.50X6.50X0.50cm/2.55X2.55X0.20in -Note:Suitable for Capacity of 20Oz. -Made of good silicone material makes it has high elasticity to ensure efficient sealing. -Flexible and supple, this silicone sealing ring is easy to install and remove, seal perfectly. -Premium silicone material makes it touch with the food directly, and practical. -Effective sealing, safe and reliable design, , you can bottle more easily. Keep your food , easy to use, and easy to prevent spills. -It's simple and convenient installation, practical using, also a fine bottle sealing accessories. Package list: 5 x Sealing Rings