Insulated and Expandable Lunch Packs Includes Leak Proof Container Set The exterior is constructed of tough, water and stain-resistant Rhino-Tech that is easy to wipe clean Removable and adjustable shoulder strap Designed to be carried vertically or horizontally Expandable provides double capacity when expanded and includes a leak proof food container set. The lunch box features two high performance Ice Walls, which in combination with SuperFoam insulation and Therma-Flect radiant barrier, provide superior cooling to keep food fridge cold. The Ice Walls fit inside two exterior pockets allowing you to pack lunch the night before, refrigerate it and insert the frozen Ice Walls in the morning without losing any of the cold by opening the lunch box. It has a water repellent exterior and can be carried horizontally or vertically by its handles or by the removable, adjustable shoulder strap. The handle also includes a Swing Clip that attaches to backpacks for hands free carrying.