Hydro Flask 12oz Insulated Food Flask. No matter if your plans include chasing waterfalls or seeking out snowflakes, be sure to take the 12 oz Food Flask along for the ride. From hot soups to frozen smoothies, it keeps your favorite foods the perfect temperature. And since it’s made with professional-grade stainless steel, it won’t retain or transfer flavors. TempShield™ insulation keeps cold foods cold and hot foods hot. 18/8 Pro-Grade Stainless Steel construction. BPA-Free and Phthalate-Free. Secure lid for easy grab and go refueling. 12 oz. Imported.