This magnetic spill-proof cup lid is suitable for 30oz glass drinkware with an inner diameter of 9.5cm. Made of BPA-free AS plastic + magnet, it is safe and non-toxic. The lid is easy to clean and keeps drinks hot or cold. It ensures driving safety by preventing water splashes. With a premium material and impact-resistance, it stays crystal clear even after repeated use. Enjoy your drinks without worrying about spills Features: 1. DRIVING SAFETY: When you are driving, are you afraid of water splashing from the tumble? With this lid, you won’t 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 free，safe 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