1[Large Capacity]: The insulated pizza delivery backpack has a large capacity, allowing you to carry a significant amount of food in one go, improving carrying efficiency, saving your time and effort. 2[Expandable Layer]: The insulated pizza bag features an expandable layer that enhances carrying efficiency, you can easily adjust the size according to your needs, making it convenient for both small and large orders. 3[Oxford Cloth]: The take out insulated backpack is made of Oxford fabric with precise stitching, very durable, can withstand the daily rigors of pizza delivery without easily tearing or wearing out. 4[Aluminum Film]: The food delivery insulated backpack is designed with a complete internal aluminum foil lining, with strong heat preservation ability, and has small changes in food temperature. 5[Non Toxic]: The thermal backpack is made from non toxic materials, ensuring that it has no adverse effects on the food, safe for storing and transporting food, allowing you to use it with peace of mind.