EXPANDABLE LUNCH PACK: Lunch pack features SuperFoam insulation and a Therma-Flect radiant barrier interior to keep your lunch, snacks, and drinks cold and fresh LEAK PROOF LINING WITH MICROBAN PROTECTION: Ultra Safe leak proof* lining with Microban protection; Built-in protection helps prevent build-up of bacterial odors and stains; Makes lunch box easier to clean after work or picnics; *Zipper not leak proof ICE PACK AND FOOD CONTAINER INCLUDED: Lunch box includes a two piece, leak proof food storage container and high performance ice pack for storing food and keeping it cold; Exterior accessory pocket provides extra storage VERSATILE DESIGN: Easy to carry horizontally, vertically, over the shoulder, by the handles, or attached to a backpack or bag; Lunch pack expands to nearly double capacity; Perfect for taking lunch on the go EXPANDABLE DESIGN: Dual compartment conveniently stores lunch, snacks, sandwiches, water bottles, and more with ease; Approximately doubles in capacity when expanded from 143 ounces to an expanded capacity of 270 ounces