Bojueshaw 3Pcs Silicone Spill Proof Stopper Kit for Stanley Cup 1.0,Includes 2 Straw Covers,Square & Round Leak Stoppers

Essential 3-Piece Set - Includes straw cover, square stopper, and round stopper to prevent leaks from all angles. Fits perfectly with Stanley 1.0 tumblers (30oz/40oz). Reliable Leak Protection - Creates a tight seal to prevent spills whether you're drinking, carrying, or storing your tumbler. No more worrying about leaks in your bag or car. Durable & Safe Material - Made of flexible, food-grade silicone that's BPA-free and stain-resistant. Holds its shape after repeated use and washing. Easy to Use & Clean - Simply place on your tumbler for instant protection. All pieces are dishwasher safe for quick and convenient cleaning. Practical Everyday Use - Works great for work, travel, gym, or home. Keeps drinks secure while preventing dust and debris from entering your tumbler.