Each straw cap features a clever magnet that allows it to perch on top of your lids when not in use, preventing loss and ensuring easy access. magnetic straw caps are specifically designed to be compatible only with for Era and Resa straw tumblers, providing a snug and reliable fit for your favorite drinks. Made from premium, food-grade silicone, straw caps are safe for daily use, ensuring that your beverages stay pure and free from harmful substances. The silicone material is dishwasher safe, allowing for effortless cleaning and maintenance, so you can spend more time enjoying your drinks and less time on cleanup. Elevate your drinking experience with these stylish magnetic straw caps that not only enhance the function of your tumblers but also add a trendy touch to your beverage routine. Color: Black Material: Silicone Package Contents: 2 * Magnetic Straw Caps Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.