It knows when to close - The ultimate hydration companion, Cortland has all the features you already love in a water bottle – and more. It's basically the Holy Grail of water bottles or at least the one that will get everyone in your office talking. Easy one handed drinking, spout cover to protect against dirt and germs and it automatically seals between sips. So go ahead and start hydrating. Our Lids Are Sealed – AUTOSEAL technology is leak and spill proof (Yes there is a difference!) Lend a Hand – Easy one-handed drinking with the push of a button Squeaky Clean – Easy clean lid completely opens for an extra squeaky clean and easy clean Lock it Up – AUTOSEAL button lock for added peace of mind Cleaner Drinking – Protective spout cover keeps out gross dirt and germs and is leak-proof when closed Carry On – Clip on handle attaches to bags, gear, keys and more Measure Up – Convenient volume markings for easy measuring and tracking Perfect Fit – Fits most car cup holders Clean Up – Top rack dishwasher safe lid and body All Contigo products are BPA free, have a limited lifetime guarantee and are designed by passionate inventors and innovators who have your mobility in mind.9cm Dia.26cm High.