Pressure Relief Hole DesignIt effectively prevents excessive pressure accumulation and expansion of steam during heating It can also be used to drain excess water when washing rice or cooking noodles adding convenience to your cooking process DoubleSided Scale There are scales on the inside and outside of the camping lunch box which is very convenient for measuring the ratio of food and water Foldable AntiScalding Handle The dinner box is designed with a thickened silicone antiscald handle that provides effective heat insulation Durable Aluminum Alloy MaterialMade of aluminum alloy the dinner box is strong and durable The surface is treated with a rapidly thermal conductivity oxidation process providing improved wear resistance and corrosion resistance Portable and Lightweight The foldable design makes it convenient to carry perfect for camping picnics barbecues and hiking