U Konserve 33-Ounce Rectangle Stainless Steel Container, Saffron Made of # 304 (18/8) food-grade stainless steel lids are make of non-toxic ldpe #4 plastic 33-ounce 7-3/4-inch by 5-inch by 1-3/4-inch tall Free of bpa, phthalates, pvc and lead Dishwasher safe, top rack recommended Although our lids are dishwasher safe, research has shown that it is best to keep plastice out of high tmperature environments like microwaves and dishwashers