Five matching containers hold 27 fluid ounces each, roughly three and a third cups, the right portion for a single serving lunch, a side dish, or a snack pack. Because the sizes match, they stack cleanly in the refrigerator, so a week of prepped meals stays organized instead of piled at odd angles. When the containers come back empty, each one folds flat and frees more than half the cabinet space five rigid containers would demand. Snap lock lids with an airtight valve seal keep dressings and sauces inside a lunch bag or backpack. Food grade silicone rated from minus 20 to 120 degrees Celsius moves from freezer to microwave to the top rack of the dishwasher, and the BPA free sage build resists odor and stain buildup.