I like this waterbottle. It kept my water cold for about 16 hours (the ice had mostly melted but the water itself was very cold). I tried a hot beverage and it kept it warm for close to 36 hours. Overall, I like this a lot. There's very few situations I find myself in where I need my beverage at a certain temp for a very long time--I'd hope to consume it long before the day is over. But I like knowing that I can do keep it warm or cold for a long period if I needed it to. The outside has incurred some scratches, which is normal, so I wish the outer coating was a bit more resilient, but other than that, I'm very happy! I love that it comes with 2 different lid options--that's very unique to this particular bottle and I appreciate it being included and not an additional purchase! Very pleased!