The Pull-Along Backpack has wheels and a retractable kid-sized trolley and it has adjustable straps as well. That makes it versatile enough to be used as a both a rolling bag and a backpack. Extra zipper compartments can hold all sorts of special treasures.
The Lunchpack is lightly insulated with a divider inside to keep a sandwich separate from a cold drink bottle. The bag can be hand-carried or slung over the shoulder comfortably with the adjustable nylon straps.