Our splash-proof Flip Lid features an extra-large opening that helps cool hot beverages more quickly and feels like you are drinking without a lid on at all. Designed to be opened one-handed, the Flip Lid also accommodates reusable straws and is BPA free. As the new school year begins, ensure your hydration is ready to go with Klean Kanteen's range of water bottles, caps, tumblers, and more. Designed for durability and convenience, Klean Kanteen products help you stay refreshed and focused throughout your busy school day. Choose from a variety of styles and sizes to find the perfect fit for your backpack, desk, or locker, and make every sip a sustainable one.