WHAT IS IT? Tupperware FridgeSmart as a smart system of storing produce, based on how much ventilation it needs. You can open one vent, two vents, or no vents on the tupperware, according to what you're storing in it (there's a handy chart printed right on the side so you always know how to store various foods). And you can store various fruits & veggies together, as long as they're in the same ventilation family.
Want to know one more helpful tip? You can go ahead and prep all your lettuce at once, then store it in a FridgeSmart container so it's ready to use bits at a time for salads. This is a better option than store-bought bags of prepped lettuce b/c those have usually been sprayed with extra chemicals to make them last longer. It's also great if you use a salad spinner b/c you do all your spinning at once, and have a prepped salad you can munch on for the next week.