This magnetic spill-proof cup lid is made of BPA-free AS plastic and features a magnet covering the sip hole for easy cleaning. It keeps your drink hot or cold for a long time and prevents spills while driving. Fits 20oz and 30oz mugs with an inner diameter of 8.1cm or 9.5cm. Enjoy your drinks without worrying about spills or temperature changes. Perfect for daily use and travel. Features: 1. DRIVING SAFETY: When you are driving, are you afraid of water splashing from the tumble? With this lid, you wont to worry about this issue anymore, and keep your driving safety. 2. EASY TO CLEAN: The magnet covering the sip hole is easily removed for fuss-free cleaning. Put it under running water and clean it, unlike other solid spill-proof lids. 3. KEEPING LONG TIME HOT OR COLD: The magnetic tumbler lids are perfect for sustaining your drink's temperature. Plus, our premium magnetic slide lid will prevent the aroma and taste of your drinks from escaping. 4. PREMIUM MATERIAL: Made of AS plastic + magnet which is BPA freesafe and non-toxic, It impacted and shatter resistant. Even repeated use for years, it still stays crystal clear. 5. APPLICABLE: Suitable Mug: 20oz, 30oz, Applicable Inner Diiameter: Cups with an inner diameter of 8.1cm, 9.5cm. Specification: Material: AS Plastic + Magnet Color: White, Black, Light Green Suitable Mug: 20oz, 30oz Applicable Inner Diiameter: Cups with an inner diameter of 8.1cm, 9.5cm Product Weight: 45g, 55g Package Included: 1 x Magnetic Tumbler Lid