More back-to-school fun with these beautiful designer, double-walled insulated food containers that keep contents hot or cold for hours. Extra wide mouth makes them easy to fill. The thermos is cool to the touch with hot foods and sweat-proof with cold foods. Both the interior and exterior walls are made from #304 Stainless Steel. The cap is made of recyclable HDPE#2. Hand washing is recommended. Conforms to or exceeds U.S. safety standards. They hold 11.5 ounces.