This is a milk storage bottle gasket made of silicone material. It has a reasonable design and practical function, can play an excellent leak-proof sealing effect, and effectively protect the safety of your breast milk. It is made with craftsmanship, safe and gentle, flexible and practical, suitable for most milk storage bottles, and brings you a better experience. Features -Color: White. -Material: Silicone. -Size: About 5.20X5.20X1.30cm/2.04X2.04X0.51inch. -Gentle texture, flexible and durable, it can be well adapted to most milk storage bottles. -The design is reasonable and the sealing is good, which can effectively help you protect the safety of your breast milk. -High temperature resistance, support you to perform high temperature , so that you can use it more at ease. -It is made with craftsmanship, has excellent texture, supports writing, and can be easily wiped off. -It has a softer texture and is commonly used in most milk storage bottles to help seal it. Package list: 10 x Sealing Rings