Thank you for looking! (^^) This is a cap that covers the drinking spout of a straw. Recommended for dust prevention in offices and outdoors, and to prevent pets from licking. (Straws and tumblers are not included) Compatible with 9-10mm straws Silicone, no brand ◯ Please be sure to check the actual product photo (1st image). ◯ We do not accept price reductions. ◯ You can change the combination of straw caps I have listed! Even if an item is sold out, we may have it in stock, so please feel free to contact us. ◯ We check for any issues with use, but As these are overseas products, there may be rough workmanship or slight dirt. ◯ The actual color may appear different depending on my shooting environment and your monitor. I have many other straw caps listed. Please see my listing page. Straw cap Straw cover Starbucks Coffee Tumbler Bearista Stanley Reusable cup Tumbler with straw