It's modest, light, and shrinkable, and you're going to love it. Color variations are possible. The fashion delivery backpack is made of 840D PVC on the outside, 9mm insualtion foam on the inside, PVC zippers, and Food grade hollow plate on the outside, making it highly durable and long lasting, while the inner lining is waterproof and easy to clean in case of spills or leaks. A sturdy base supports the weight of the food and keeps the bag level.