4Pcs Silicone Cartoon Decorative Straw Caps 10mm Kawaii Ice Cream Straw Toppers Reusable for Stanley 30/40oz Tumbler Accessories. Features: Dust-Proof, Eco-Friendly Reuse, Leak-Resistant, Fun Design, Easy to Clean. Made from food-grade silicone, these straw tips protectors are reusable and reduce environmental impact.