Flexible Models Convenient, compact and foldable trays (Duck Ponds) capture small leaks and spills Six sizes available to fit almost any application. Simply unroll, then unfold No straps, supports or sidewalls to set up. One piece units no components or pieces to lose. /10 Mil PVC fabric provides rugged durability and excellent chemical compatibility. Folds/rolls into small size. Use as"duck ponds" for containment under vehicles and equipment.