Hydration Thermos Hydro Flask Standard Mouth Thermo 620ml Blue. The HYDRO FLASK Standard Mouth Thermo 620ml Cascade is a durable and versatile thermos designed for all your hydration needs. This thermos features a standard mouth opening, making it easy to fill with your favorite beverages and easy to drink from. The 620ml capacity allows you to stay hydrated throughout the day, whether you're at work, school, or out exploring the great outdoors.Constructed from high-quality stainless steel, this thermos is built to last and is resistant to rust, odor, and bacteria. The double-wall vacuum insulation keeps your drinks hot for up to 6 hours and cold for up to 24 hours, ensuring that your beverages stay at the perfect temperature.With its sleek Cascade color and stylish design, the HYDRO FLASK Standard Mouth Thermo is not only functional but also fashionable. Stay hydrated and stylish with this reliable and versatile thermos.