Random Straw Topper：The package includes20 Pcs Random straw covers cap，cute straw caps add fun and aesthetics to the cup. Size: Our Straw stoppers are suitable for all kinds of straws with an outer diameter of 0.35"-0.4"（9-10mm)，perfect for 40oz&30oz stanley straws（Straws not included） Straw Covers for Reusable Straws: Our Straw tip Covers are made of food-grade material, safe and non-toxic, flexible and durable, suitable for children and adults to use. Protect Your Drink: Our straw toppers for tumblers provide good sealing for straws, dustproof and splashproof,prevent pet hair from getting into your drink Application: The straw lid is small and easy to carry, suitable for outdoor activities or work, and can also be used as a wonderful gift for friends and family. 20Pcs Random Different Straw Cover Toppers for Stanley 40oz Cute Tumbler Straw Cap Reusable Straw Tips for 0.4inch Straws Stanley Cup Accessories