I am so glad that I decided to give this a shot. I have a lot of water bottles that claim to do all kinds of things- but this one actually works like it says it does. It keeps cold drinks cold for longer, and hot drinks warm for longer. Its really easy to clean and its not too heavy or big. My kids love it for school, they can bring a cold drink and it will stay cold all day. I would absolutely recommend picking one up! Great for long trips. You wont be disappointed with this travel bottle. Great brand, amazing product! Check it out.