Contigo Bottles-Purple, Green & Black 3 BPA free 750 ml hydration bottles - When we say easy to drink, we mean easy to drink. Push the button to sip, release the button to seal. No more fidgeting with replacing lids and caps. It's that simple. Automatically seals between sips - 100% leak and spill proof One-handed operation A water bottle should be designed to go anywhere. That's why the AUTOSEAL Water Bottle can be clipped to your bag for hands-free carrying. Dishwasher safe