First off let me say this 64 oz unit is giant. My second grader and 4th grader thought the size alone was amazing. Really like that Gatorade has thought of practically everything for games and practices: name spot, hanging hook, and gripping section. I can see these going to the gym too. I'm going to grab some of the smaller units because they are cool. Straightforward use and has an app that appears to be only for Iphone. It would not let me download through the Android play store.