Cute Straw Topper: You will receive 6 Pcs duck straw Topper, cute shapes and bright colors can enhance the visual appeal of the cup, making drinking water more interesting Size: Our Straw cover is 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） Silicone straw tips: Our Straw caps are made of food-grade silicone material, safe and non-toxic, flexible and durable, dishwasher safe, easy to clean， and suitable for children and adults. Protect Your Drink: Our cute straw toppers for tumblers provide good sealing for straws, dustproof and splashproof, prevent insects or pet hair from getting into your drink Application: The straw cover cap is small and easy to carry, suitable for outdoor activities or work, they are also unique and thoughtful gifts for friends, colleagues, and family 6Pcs Duck Straw Cover Toppers for Stanley Cup 40oz Tumbler Silicone Straw Covers Cap Reusable Straw Tips for 0.4inch Straws Stanley Cup Accessories