473 ml. Colder. Hotter. Longer. 18/8. Pro-grade stainless steel. Sweat proof finish. Comfortable grip. Cold 24 hours. A hot 6 hours. Tempshield. Double wall vacuum insulation. Our unique insulation keeps your drink cold or hot for hours so you can stay refreshed for any adventure. HydroFlask.com. Designed in Bend, OR. Made in China.