Features: Our 30/40oz tumblers flipping straw lid replacements provide a seamless, leakproof experience, ensuring your drinks stay secure and temperature-maintained without any spills. Constructed with enduring Plastic, our reusable tumblers covers are designed for longevity and sustained use. They are resistant to wear and tear, making it a stable accessory for your tumblers. Whether it's keeping your beverages ice cold or hot, our lid ensuring your drink stays at your preferred temperature longer. Easy to Clean: Simplify your routine with our reusable straw caps that are dishwasher safe, making cleanup easily. Our dustproof tumblers lid are crafted with a fit to prevent leaks and spills. The tight seal maintains carbonation and freshness, so you can enjoy your favorite beverages on the go without worry. Specifications: Component: Plastic Type: 30oz/40oz Color: Black/Gray Outer Diameter: about 10cm/3.93in Inner Diameter: about 8cm/3.14in Height: about 4cm/1.57inch Package Includes: 2pcs Handle Straw Lid note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.