Features: High quality: The straw stoppers is made of food grade silicone, with good sealing effect, durability and high-temperature resistance, and can be reused. Dust-proof: The straw cap has a sealed, dustproof, and splash-proof design, which can better avoid dust and splashing. Easy to use: Just fix the straw cover on the straw and pulls it out directly when drinking, and the straw cover will hangs on the straw. Portable: Small in size and light in weight, compatible-with most straws with a diameter of 7-8mm/0.27-0.31inch. Draw cap cover allows you to enjoy your drink without worrying about spillage. These silicone flow tip covers are also very environmentally friendly and are a great choice for environmentally conscious consumer. Specifications: Material: Silicone Color: Red/Blue/Yellow/Grey-color/White Inner Diameter: Approx. 7mm/0.27inch Package Includes: 10pcs Silicone Straw Tip Cover note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.