Simply the World's Best Water Bottle. Odorless FDA approved Lexan, dishwasher safe, and just plain great to use. It has a separate large filling top to allow quick fill or adding ice. But, it also has a small mouth for drinking so you don't spill all over yourself. And a screen keeps ice or tea from hitting you in the teeth. I'm telling you, it's the best water bottle ever. 1000 ml.