Never miss out on the perfect cup of coffee, even when you are out and about. The Hydro Flask Wide Mouth Flex-Sip 16oz in Cobalt has a leak-proof lid and smooth flow opening so no need to worry about any spills. Using double wall vacuum insulation, the TempShield™ technology prevents condensation and heat transfer—keeping cold brew icy cool and lattes hot for hours. The lead-free 18/8 pro-grade stainless steel construction is durable, long-lasting, and provides pure taste with every sip. Say goodbye to wasteful single-use coffee cups, the environment (and your mouth!) will thank you.