If you love the look of glass storage sets or simply tire of disposable storage like plastic and foil, Bormioli offers this sturdy Round Glass Storage Set. Four thick glass containers will keep food fresh and odor-free, plus contents are easily viewable. Even use them as serving pieces. Set includes tight fitting plastic lids, which makes them portable, too. Without lids on, they nest inside each other when not in use to save space. Microwave and freezer safe. Do not use in conventional oven or on the stove.