Water Bottle Push-Button Lid: It is designed for an easy, one-handed drinking experience. The chug-lid design opens with the push of a button for high liquid flow and one-handed drinking，Leak proof and easy to carry.The rubber nozzle is removable and easy to clean. Compatibility: The lid also fits the 12 oz 16 oz 18 oz 32 oz 40 oz and 64 oz Hydro Flask Hydro Flask, Iron Flask, Hydro Cell, Thermoflask, and most brands wide mouth water bottles. NOT for standard and narrow mouth water bottles. NOT for tumbler or growler. Leakproof and Dustproof : The flip-down cover protects the drinking spout from dirt. Button lock prevents accidental opening of the leakproof lid. Clear cap with good air-tightness makes the water bottle better heat preservation and leakproof. Premium Material: Made with food grade BPA free plastic which means very safe, lid and straw can be clean in dishwasher top rack only. The end of the straw has a rubbery coating (soft plastic) Protect your teeth from bruising What you get : you shall get 2 straw lid, 4 straws, 2 straw brush , 2 years warranty and friendly customer service. please feel free to contact us if you have any questons, you will get prompt reply within 24 hours and satisfactory solution. HYDROWION 2 Pack 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&Blue