A rucksack , backpack ,daysack has changed in design over the years to what we now call a rucksack . Long gone are the thin leather straps and external frames that were so uncomfortable and difficult to travel any distance without having painful high spot areas such as the shoulder. The military rucksacks were not much better and they were glad to see the back of the old kit bags.
Although there are still some rucksacks with external frames they tend to be for special loads and they are rare for civilian use as most manufactures now make them with internal frames with loads of padding in the right places.
