Made from 100 percent high density polyethylene, the blow-molded line represents Nursery Supplies larges single category of products with over 50 sizes and shapes from just under a quart all the way to 60 gallons. Durable, flexible and easy on the budget. Side ribs, flutes, give strength while a unique bottom-edge corrugation design adds further to column rigidity on many of these wide-bottomed containers. Molded-in handles on the top rim on all #5 pots and above.