The Motivational Bottle, a BPA-Free reusable water bottle with a unique timeline to help you keep track of your water intake, is our most popular product. Our bottles range from 27oz to 34oz to comfortably match your needs. Proper hydration can result in a considerable boost in energy, leading to noticeable gains in motivation and productivity. It might take up to 2 weeks of constant hydration to notice the favorable advantages, especially the cognitive ones.