Five matching containers hold 27 fluid ounces each, about three and a third cups, sized for a single serving lunch, a side dish, or a snack. Each container measures 7.2 by 5.4 inches, so the set stacks cleanly in the refrigerator and a week of prepped meals stays organized. When empty, each container collapses from 2.8 inches tall to just 1.2 inches, cutting its height by more than half and freeing up cabinet, drawer, RV, or camping bin space that rigid containers would take. Snap lock lids with an airtight valve seal help keep dressings and sauces in place inside a lunch bag or backpack. The food grade 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 5 containers and 5 lids.