The Klean Kanteen Straw Lid the perfect accessory for the 16oz or 20oz Insulated Tumblers and Steel Pint Cups and to save the planet from plastic straw waste. Great for smoothies, pressed juice, or iced coffee, the Straw Lid makes sipping safe, easy and spill resistant. Press fit Straw Lid is BPA-free and easy to clean with removable silicone gasket. A great solution to single use straws and easy hydration! NOTE: Pint Lid is NOT leakproof.