For coffee on the go, the 16oz Coffee Flask from Hydro Flask with new Flex Sip Lid. The ultimate in temperate vacuum technology, caffeine lovers rejoice, the Hydro Flask 16oz Wide Mouth coffee flask with an all-new Flex Sip Lid perfect for keeping your favourite beverage hot hour after hour. Whether youre taking your morning coffee to the office, hiking through the mountains or simply heading to the gym, Hydro Flasks TempShield double-wall vacuum insulation ensures your beverage of choice tastes exactly how you want, for as long as you need it to. A double-walled inner and outer chamber within the flask creates a vacuum to prevent heat transfer through conduction. In addition, the inner chamber features a reflective lining, ensuring theres virtually no way heat can escape or enter the flask. The result a flask that unrivalled in its ability to ensure optimal temperatures for your drink of choice. The all-new innovative Flex Sip Lid features a smooth flow opening that lets you sip and transport your drink without worrying about leaks and features a handy flex strap for easy carrying. Hydro Flask bottles use 188 Pro-Grade stainless steel which BPA and Phthalate-free, which culminates in a flask that designed for a lifetime.The Hydro Flask 16oz Flex Sip flask perfect for a busy day, whether youre commuting the city or hiking trails, stay hydrated and caffeinated, no matter the temperature.