Trini Mendiola wrote a review of Hydro Flask 18oz. Narrow Mouth Water Bottle on April 28, 2012
I really like this bottle. It really does keep drinks cold or hot for a VERY lengthy amount of time. IMHO, though, I think it does better with COLD drinks over HOT drinks. I mean, I had ice in here for a day and a half!! Amazing!! I like the quality of the material they use (18/8 restaurant quality stainless steel). IT doesn't retain flavors or doesn't have that "metallic" taste so many of these metal bottles out there seem to have! So, give it a try!