They not only serve as a decoration but also function as a seal plug, effectively preventing dirt, and other impurities from entering the straw and ensuring the safe of your drinks. Convenient and lightweight, they are perfect for use , office, or outdoor activities. Features - Color: As Shown - Material: Silicone - Size: 3.50X2.30X2.30cm/1.38X0.90X0.90in - Note: Suitable for 10mm/0.39 diameter straw - Easy and convenient to use, not easy to break or deform, reusable and can be applied for longtime. - Suitable for banquet, birthday parties and rewards, ceremonies, theme parties and others. - The surface of the straw plug is smooth and comfortable to touch, easy for you to use. - It looks very cute, easy to put on and take off when using, keeps the straw and cup clean. - Preventing drinks from spilling when moving, small and portable, you can take it anywhere. Package list: 4 x straw tip covers(acorn)