Four sizes cover dinners, sides, snacks, and condiments: a 40.6 fluid ounce (1.2 liter) rectangle for complete meals, a 27 fluid ounce (800 ml) rectangle for sides, a 23.7 fluid ounce (700 ml) square for snacks, and a 16.9 fluid ounce (500 ml) square for dips and condiments. Squares and rectangles line up edge to edge, so refrigerator and freezer shelves hold more with fewer gaps. Each food grade silicone container collapses to 1.2 to 1.4 inches tall when empty, less than half its full height, then pops back to full depth in seconds. Leakproof snap lock lids with an airtight valve seal keep soups, sauces, and dressings sealed in the refrigerator or a lunch bag. The silicone bodies handle minus 4 to 248 degrees Fahrenheit (minus 20 to 120 degrees Celsius), going from freezer to microwave (lid off or valve open) to the top rack of the dishwasher. The BPA free sage build resists odors and stains. Includes 4 containers and 4 lids.