Smooth-rolling freshness keepers come in 33-qt., 47-qt. and versatile, 12-qt./33-qt. combo design, storing pet food, potatoes, sidewalk salt, charcoal and more! Stackable combo bin holds wrapping paper/bows, dog treats/dog food and other storage “combos.” Sturdy polypropylene with airtight, snap-close lids, four wheels (no wheels on 12-qt). No express shipping.