Fangrui Product Details Excellent New Design: Auto Flip Top Spout Can Help You Drink Easier Than Others. The Dust Cover Can Effectively Prevent Dust From Entering And Avoid Touching The Nozzle With Hands, Which Is More Convenient And Hygienic True One-handed Use: A Practical And Convenient One-button Opening, Allowing People To Be Fully One Hand-free. Quick Thirst Quenching Anytime, Anywhere Leak-proof: Equipped With Double Silicone Sealing Gaskets, Our Lids Provid A Secure Sealed Condition, And Make Your Water Bottle Leak-proof When Lids Closed Properly. This Wide-mouth Lid Has A Flexible Handle Design, Which Is Easier To Hold And Saves Backpack Space Premium -free Materials: It Is Made Of Non- Environmentally Friendly Materials, So You Can Use It With Confidence. You Not Experience Any Unpleasant Added Flavor In Your Drinks, And Our Lids Are Safe For Kids And Adults To Use Compatibility: The Spout Lid Fits Perfectly All Sizes Of , , , , Simple Modern, And Most Wide Mouth Water Bottles. Not For Standard And Narrow Mouth Water