Perfectly Compatible】- Our straw caps have a diameter of 10mm (0.4in) and are designed to be perfectly compatible with the Stanley 40 oz/30 oz tumbler with handle, and for the simple modern 40 oz tumbler with straw. They also fit all large-diameter long straws with a diameter of 6-10mm, but please confirm the size of your straw before purchasing the straw cover cap.

【Food Grade Material】- Made of food grade silicone, there is no unpleasant smell, you can use it without worry. And these straw covers are durable, reusable, and easy to clean by hand or in the dishwasher. Plus, they can help encourage children to drink more water.

【Cute Design and Practical】- These sun hat straw toppers are not only stylish, but practical too. It prevents the straw from being contaminated by dust and spittle in the air, and also prevents mosquitoes from entering the water cup, keeps the straw and cup hygienic.

【Easy to Carry】- There is a string on the straw cap, which can be fastened to the straw. Even after opening the lid, it can still hang on the side of the straw, preventing loss. Making it perfect for outdoor activities like walking, camping, and hiking.