Flow on - wide mouth for high flow and fast hydration; push it-push button to open spout for an easy, one-handed drinking experience Seal it in - leak-proof lid (when closed) for on-the-go convenience; cleaner drinking - spout cover helps to keep out dirt and germs Lock it up - button lock gives you added peace of mind Built to last - shatter-, stain- and Odor-resistant; BPA-free plastic Carry on - clip-on carry handle for easy transport; clean up - top-rack dishwasher safe BPA Free Plastic Press to refresh - stop, drop and Chug - it's easy with the Contigo AUTOSPOUT Chug water bottle! with the press of a button, the Chug spout opens for convenient on-the-go one-handed drinking. You'll love the wide spout because the water flows quickly into your mouth (perfect for chugging when you need to Hydrate in a hurry). when you're finished drinking, simply press the spout under the protective cover to fully close for help protecting against leaks and germs. Rule #76: no excuses, Hydrate like a champion with the AUTOSPOUT Chug.