A flat pack bag has a capacity of 1,000 pounds, or 2.2 cubic feet, according to the U.S. Federal Trade Commission.
There are several options for flat pack bags.
Some models come with an extra side pocket, while others have pockets on the outside.
Some flat packers carry their bags in two-by-two-inch ziploc bags.
They are available in many colors, from red to green, black and blue, and can have pockets for extra items.
A wide variety of sizes and shapes are available for flat packs, and some are more durable than others.
A flatpack bag will weigh less than 3.4 pounds.
