！！！Precise Fit for Peace of Mind：Before purchasing, please measure the diameter of your cup. The LUVCOSY straw lid has an inner diameter of 2.9 inches (approximately 73.7 mm). If the cup's diameter *exceeds 2.9 inches/73.7 mm*, the lid will not fit tightly, affecting the user experience. Accurate measurement is the first step to a perfect match. Wide Compatibility: LUVCOSY 3-inch Mason Jar Lids with Straws set offers versatile compatibility with a range of cup types. They're compatible with wide mouth Mason Jar, Ember 10oz Mug, Host Freeze Beer Glasses(16 oz) and Tervis Insulated Tumbler Cup(16 oz). Premium Material: This Mason Jar lid is made of high-quality material, which is not only easy to clean, but also meets different drinking needs and gives you more peace of mind when you use it. Caring After-Sales Service for Worry-Free Shopping：We prioritize customer satisfaction. If the product does not meet your expectations, contact us at any time. We will provide a solution with prompt 24-hour response, ensuring a hassle-free shopping experience. Quick & Easy Drinking: The vented and reusable mason jar lid design allows for quicker drinking, perfect for busy lifestyles that require on-the-go hydration. Versatile Function: LUVCOSY Mason Jar Lids with Straws adapt effortlessly to different beverage needs, such as smoothies, juices, and milkshakes, making it a versatile choice. Glass Straw Included: You can get both lids and straws. LUVCOSY Mason Jar Lids with Straws are specifically designed for enjoying drinks with abundant ingredients like pulp and boba, providing a more complete beverage experience. Lids with Straws suitable for Mason Jar (Wide Mouth)