When I first saw and learned about the Hydro Flask, I was quite impressed. The company claims that this bottle will keep drinks cold for 24 hours and hot for 12 hours. I was a little skeptical. At the Outdoor Retailers show I saw one of their bottles that still had ice in it after three days. It keeps ice for three days, I thought. After talking with the company for a bit I was pleased to be able to get a bottle to test and review.
Well I have now taken it with me hiking and to the office for a few weeks now and almost can't live without it. The claim of keeping things cold is spot on. First I took it to Bryce Canyon on a family trip. I filled it up with ice and water, before I left and used it on the drive down. I would drink all the water but there would still be ice in the bottle. So I would add more water but not more ice. By the end of the night I had ice still in the bottle. I woke up the next morning and checked the bottle and lo and behold ice! I was impressed.
The next day I took a hike and filled it up again with ice and water before I left. This time I left the bottle in the car to see how it would do in a hot car. I also didn't want to hike with the bottle. It is a little heavy if you are going to be hiking with it. But leaving it in the car was a great option. When I got back to the car, I opened the bottle and I had ice cold water. It was refreshing. I was the only one who had cold water still. I decided that this is a great option to take and leave the Hydro Flask in the car so after a hard hike, you can have cold water to drink.
I did this multiple days on the trip and each time I had cold water. I did find that the more times you add water the faster the ice melts, only naturally. But the bottle will keep ice easily for a day. Just remember if you are planning on filling it up multiple times, by the end of the day the ice will most likely be melted. While using the bottle I have filled it up three times and still had ice the last fill. Also, another great tip, the bigger the ice cubes the longer it lasts.
I have been using this bottle everyday for work and have loved it. I have been biking to work and have loved having ice cold water to drink when I get there. One day I forgot my Hydro Flask at work and remembered about half way home. I almost turned around and went back for it. That is how much I love it. I would recommend this water bottle to anyone looking to keep something cold for a long period of time. Check them out at http://www.hydroflask.com/