Hefty Clip Fresh 34-piece Food Storage Set 34-piece set Offers a variety of sizes and shapes, from a 0.9-cup container to an extra-large 17.3-cup container Perfect combination to store big, medium and small portions Locking system with silicone ring Offers an air-tight and leak-proof seal More Features See-through lids and sides ,Stain resistant Comfortable grips are easy to open and close . Microwave, freezer and dishwasher safe BPA-free