Perfect compatibility-hello! Are you looking for stanley straw? This silicone reusable straws is specially made for Stanley Cup. Length 12.2inchs,Diameter 0.25inch,great for smoothies and shakes,perfectly compatible with the Stanley 14 to 40oz tumbler and comes with a cleaning brush of 11inchs in length, don't have to worry about cleaning problems. Cut to your liking-if your cup is 20 ounces or 30 ounces, you can cut it according to the length you like. If you want to use it for other capacity or other brand models, please carefully check the caliber and length before ordering. Why choose silicone straws?Compared to stainless steel and hard plastic straws, silicone is soft and bendable without breaking. It won't hit your teeth or gums when you drink. It will not become cold or hot with the drink. There is No maddening noise in the cup Safe materials-No matter what the material, health is the most important. This straw is made of 100% food-grade silicone, BPA free and lead free, which will not spoil the taste of drinks and is safer than stainless steel and plastic. Chewing straw lovers' favorite: There are many people, whether adults or children, who have the habit of chewing straws. This silicone straw is more friendly to those who like to bite straws. Its excellent quality can resist chewing and biting, and its service life is longer. 6 Pack Silicone Replacement Straws for Stanley 20 30 40oz Cup, Long Straws Compatible 40 oz Stanley Tumbler,Reusable Straw with Cleaning Brush for Stanley Cup Accessories