I forgot to ask Ngaire before she departed so I am hoping one of the other experts around here can answer.

Does "soft sided" mean totally "shapeless" like a stuffed pillow case or a duffle bag or does it mean that the "material" on the outside of the bag is soft such as the ballistic nylon travel pro roll aboards (versus a hard sided samsonite)? If the former, do rolling duffle bags satisfy the requirement as they have a "hard" side where the handle mechanism is located?

thanks,