50L LARGE CAPACITYThe large capacity of the insulated delivery backpack allows you to carry a large amount of food at one time, which improves carrying efficiency and saves time and labor. LINED WITH ALUMINUM FOILThe inside of the delivery insulated backpack is designed with a complete aluminum foil lining, which provides a strong heat preservation ability and little change in food temperature. EXPANDABLE LAYERThe expandable layer of the insulated pizza bag improves carrying efficiency, you can easily adjust the size as needed, convenient for carrying small and large orders. OXFORD CLOTH MATERIALThe delivery insulated backpack is made of oxford cloth with precise stitching, very durable and can withstand the daily rigors of pizza delivery, not easy to tear or wear out. NO & HARMLESSThe insulated backpack is made of harmless materials to ensure that it won't adversely affect your food, safe for storing and transporting your food, so you can use it with peace of mind.