I have a real problem, I do not see enough (water course) At work, I take tea and then a glass of water at the water fountain and then I forget to go take a drink, lost in my work. So I looked for a small bottle that I could reuse and refill. I filled the water fountain and I put it on my desk, I quickly took the reflex to drink throughout the day. In summer, I put iced tea.
Finally, I bought a larger model (0.5 L) and I kept this one for sport. I have these bottles for 3 years and no worries. They are practical, durable and easy to clean. No need to buy small bottles to go to the sports drink throughout the day ... I have bought my mom, who also did not drink enough :) (must be last)