Made of grade material, these stoppers are and practical to use, featuring lightweight and compact design, very portable to change, which makes you more convenient. The design is simple, and the surface is smooth without burrs. Applicable, replace the stopper of the water bottle at home. Features -Color: White -Material: Plastic -Size: About 4.20X3.80X3.80cm/1.65X1.49X1.49inch -Note: Suitable for 5 pounds/2.0L kettles with a of 3.5cm. -The temperature of the water can be maintained for a long time, allowing you to drink hot water anytime, anywhere. -Its compact size allows it to be easily put into any drawer for storage when not in use. -It is very small in size, does not occupy too much space at all, and is very convenient to store. -It can prevent , prevent from polluting your water, and keep the water temperature. -Even in the case of heat, it will not produce ingredients that damage your health. Package list: 20 bottle stoppers