Have more fun with these beautifully designed, double wall insulated food containers. Perfect for those hot or cold school lunches. Extra wide mouth is easy to fill. Keeps contents hot or cold for hours. 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. Cap is made of recyclable HDPE2. Conforms to or exceeds U.S. and European safety standards. Hand washing recommended Food jars are 11.5 oz. Product Dimensions 5.5 H x 3.5 W Ages 3 Years