Wheat Straw Bento Box Portable Microwave Heated Insulated Lunch Box Portable Sealed Student Fast Food Box with Lid

Product Name: insulation lunch box Material: pp Product color: green, pink, Dark green, beige, blue. for gift-giving occasions opening ceremony, advertising promotions, anniversary celebrations, festivals, trade fairs, employee benefits. fresh layers of food layer sealed insulation, one rubber ring, good sealing, prevent overflow of soup. Cover the vent valve design, based on the principle of thermal expansion and contraction, using the vent valve designed by the pressure cooker, you can open the ventilation before the cover to prevent it from being affected by the pressure.