FoodBrick Stackable Food Storage Container: 3.5 Gallons container holds up to 27 Pounds (264 Adult Servings) of Dry Foods. Made of rugged, high density polyethylene (HDPE). These unique food containers, unlike any other, can hold food and other life essentials while adding value by cross stacking up to 4 feet for maximum efficient storage. FoodBrick can interlock and stack with WaterBrick making it a unique water and food storage system; unlike no other. FoodBrick provides an air tight and moisture resistant seal.