• Stackable storage box glides across most surfaces easily so it"s easy to put into storage and retrieve • Modular lid makes the file box easy to stack • Low-friction disks on the bottom make it easy to move in and out of storage spaces on a variety of indoor surfaces without adding height to the product • Durable design accommodates various items and slides easily under most beds and other low-clearance furniture • Clear exterior makes the contents easily identifiable • Storage box also features snap-tight buckles for secure storage and holds 28 quarts or 6-1/2 gallons