Sistema Klip It Collection Food Storage Containers help keep your produce, leftovers, and other food items fresher longer. The storage containers in this set each have a rectangular shape and modular stacking design ideal for organizing your fridge, freezer, or pantry. Each of these stackable food containers has a lid with easy-locking clips and an extended flexible seal. Made from 100% virgin plastic, these BPA- and phthalate-free food storage containers are dishwasher-safe when placed on the top rack, microwave-safe without the lids, and safe for storing in fridges and freezers.