Whether you need your beverages hot or cold, Hydroflask is hands down the best vessel out there. They’re not as popular out here on the East as they are out back on the West side. Consequently, my own 40 oz., matte forest green Hydroflask often fetches extended stares and, everyone once in a while, some comments. Back home in Hawaii, everyone one and their mom has a Hydroflask (my mom has two), and the brand’s popularity is by no means unwarranted–these stainless steel, vacuum insulated bottles will keep your water (or various other drink) ice-cold, all day long. And then some.