Perfect Fit for Stanley & More: Designed for 0.4" straws, our straw toppers snugly fit Stanley 30oz/40oz tumblers, Simple Modern, and similar-sized cups. The secure silicone seal ensures a tight fit—no slipping or leaks, keeping your drink protected while on the go Adorable & Playful Designs: Upgrade your hydration with fun, eye-catching designs that add personality to your cup! Perfect for kids and adults, these charming straw covers make drinking water more enjoyable, encouraging everyone to stay hydrated in style Keep Drinks Clean & Protected: Say goodbye to dust, flies, and spills! Our dust-proof straw covers create a hygienic barrier for your drink, making them ideal for hiking, camping, travel, or daily use. Enjoy peace of mind knowing your beverage stays fresh and uncontaminated Premium Food-Grade Silicone: Crafted from 100% BPA-free, non-toxic silicone, our straw covers are safe for kids and adults, durable, and easy to clean. Reusable and eco-friendly, they’re the smart, sustainable choice for a cleaner drinking experience The Perfect Gift for Cup Enthusiasts: Looking for a unique, practical gift? These straw covers are a hit for Stanley lovers, teachers, coworkers, and friends. Great for birthdays, holidays, or just because, they combine functionality with fun—a small gift that brings big smiles!
Easy to Use
It is attached to the straw, when you open the straw cap to drink, they will hang on the side of the straw, so they won't be lost.

10mm StrawCover
Compatible with Stanley 40 OZ tumbler straws and 0.4" (12mm) diameter drinking straws. Please confirm the diameter of the straw before purchasing.