Push-Button Lid: This hydroflask lid with straw is designed for easy one-handed drinking with a chug-lid design that opens with the push of a button for high liquid flow. Compatibility: The HYDROWIION wide mouth straw lid fits the 12 oz, 16 oz, 18 oz, 32 oz, 40 oz, and 64 oz Hydro Flask, Iron Flask, and most brands wide mouth water bottles. Leakproof and Dustproof: The flip-down cover protects the drinking spout from dirt and the button lock prevents accidental opening of the leakproof lid. Premium Material: Made with food grade BPA free plastic which is safe and the hydro flask straw lid and straw can be cleaned in the dishwasher top rack only. Order with No Risk: You will receive 2 hydroflask wide mouth straw lids, 4 straws, 2 straw brushes, 2 years warranty, and friendly customer service. HYDROWION Auto Flip Straw Lid with Button Lock for Wide Mouth Water Bottle 12, 18, 24, 32, 40, 64oz, Great Lid for Hydro Flask, Takeya, Iron Flask,Black