One For Multi Size Our straw stoppers are designed to be compatible with various brands of straws ranging from 6-10mm in diameter. Use them with different water bottle straws and reduce the need for multiple accessories. Creative Stopper Innovative tapered internal design ensures a secure fit across a range of straw diameters, making it suitable for use with popular brands such as Stanley, Simple , Yeti, Owala, Hydro Flask, Reduce, and others. Food Grade Silicone Made from premium food-grade silicone, these stoppers are odor-free, BPA-free, and safe for repeated use. They offer a high-quality, hygienic solution for keeping your straw clean. Dishwasher safe for easy cleaning. Useful Gadget The straw topper helps protect the straw from dust, airborne particles, and debris, while also preventing crumbs from entering the cup. Maintains hygiene and ensures a clean, confident drinking experience.