One thing you will learn is that in addition to enjoying hiking, biking, and skiing is that I am an avid equestrian. On July 4th my friend and I visited a nearby centennial farm. We did some barn work and went on a looong trail ride. About 5 hours later I remembered that I had brought my Hydro Flask insulated water bottle. This is the first time I had left it in a hot car and was worried the water would be hot. Lo and behold it still had ice in it! I was extremely surprised that I could quench my thirst with cold water.
These also come in growlers for beer and flasks for things like hot soup. Once I get a chance to use these I will update you. Check 'em out here!
Need more proof that you need to add one of these to your collection? Check out the review that Outside did last October.