Expandable Lunch Pack Ultra Arctic Zone Plus 4 Containers with lids and 2 Ice Packs (Blue Light Blue) The Ultra by Arctic Zone Lunch Pack provides double capacity when expanded* and features SuperFoam insulation and 2 high performance Ice Walls that in combination provide up to 6 hours of fridge cold performance**! Also included is a bento container that converts to 4 separate containers. 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 pack. The lunch pack is designed to be carried vertically or horizontally and includes two padded handles and a removable, adjustable shoulder strap.