Perfect Fits Stanley : Perfect compatibility your flavor cartridges with your Stanley Tumbler. Our adapter perfectly fits 40 & 64 OZ Stanley Quencher H2.0 FlowState Tumblers. No leaks, no fuss. Just a snug fit. Enjoy a beautiful and healthy life Safe & Durable Materials : Crafted from sturdy polypropylene plastic and paired with a food-safe silicone ring. Plus, it's BPA Free, ensuring every sip you take is clean and safe from harmful chemicals. No odor Easy To Cleaning : Cleaning's a breeze! Pop our adapter in the dishwasher top shelf after using. Or you can just rinse with water. We also give you a multi-functional cup lid brush, which is very convenient for cleaning our adapter and Stanley's cup lid. Spend less time cleaning and more time enjoying your favorite flavors Leakproof : No drips or spills. Our adapter's silicone ring guarantees a tight seal. Use your lid on your Stanley cup with confidence, knowing every drop stays where it should. The threads of the lid fit perfectly with the Stanley cup Perfect After-Sales Service : If you have any questions about our products, please contact us and I will solve them for you as soon as possible. Please note- this adapter is only compatible with the 40oz / 64oz Stanley cup. Bottle and lid are not included. Any mention of the brand is for compatibility purposes only Tumbler Adapter for Stanley to Flavor Cartridge, Compatible with Stanley Quencher H2.0 FlowState Stainless Steel Tumblers 40oz&64oz, Adapter to Flavor Cartridge, BPA Free, Food Grade Silicone