1.9 l. Colder. Hotter. Longer. Happier. Keeps your drink at the perfect temperature so you can stay refreshed for any adventure. BPA free. Lifetime warranty. 5% back. TempShield: Our unique double wall insulation. Protects temperature for up to 24 hours cold and 6 hours hot. Easy grip. Sweat free. Built to last. Pro-grade. Stainless steel. HydroFlask.com. Made in China.