TRADESMAN PRO TOUGH BOX 9-QUART COOLER TM Klein’s new cooler is just as tough as the original 17-quart version. With the same 30-hour ice retention and 300 lb. seating capacity, there’s just as much to love about this smaller version. Its 9-quart capacity leaves plenty of room for drinks, snacks and lunch. The convenient, interior compartment holds smaller items like napkins, utensils, medicine, etc.