Silicone Straw Toppers for 30&40 Oz Stanley Cup Accessories with Storage box

Perfect Compatibility: Our straw covers are suitable for 30/40oz stanley cups with a diameter of 10mm (0.4in), suitable for almost all large diameter straws on the market. 💖Storage box: Unlike most straw lids on the market, we give you an extra small box for storing straw lids, which keeps the straw lids clean and tidy, and is very light and easy to carry, you can put it directly into your pocket. 💖High-quality materials: This hydro flask straw lid is made of food-grade silicone, BPA-free and odor-free. Easy to clean, dishwasher safe. 💖Strong practicality: The straw cover cap is reusable, dust-proof and splash-proof, keeping the straw clean and preventing dust in the air from entering the water cup and harming your body.