The straw plug can be directly fixed on the straw, and can be removed directly when using the straw; after removing, the straw plug will the straw. They prevent adhering to the straw, are air-tight and splash-proof. And and for the health of you and your family. Features - ColorTransparent -Material:Glass - Size: 4.20X1.20X1.20cm/1.65X0.47X0.47in -Straw tips covers are selected glass material, which can be safely and durably used for a long time. -These straw covers can your straws dirt. Also, these straw tips cover is nice decor for straws. -Small in size and light in weight, it won't take up too much space. Easy to store and install. -Perfect for adorning your straws, make them look unique and lovely. Not easy to deform, tear or break, and can be kept for a long time; -Straw tips cover is practical for protecting your straws , you can use them with ease and confidence. Package list: 12 x straw covers