There are some developmental stages fro best of luck. First of all, you have the discovery or creation of the product and then there is the growth and development of different categories of the merchandise. This is advancement from the product. This is the same case that happened with the backpacks. The event in field from the
backpacking backpacks started with just a simple bag that was used to carry in hand. This bag was then modified so that it can be used on the shoulder. It was then changed to the two shoulders. This is actually the first category introduced first the bags that can be put on one shoulder and second may be the bag that can be placed on both shoulders. This is more convenient. It was seen that while running the bag was getting unstable so a lower strip was added in the bag that led to another class.
The category was divided since the bags with lower strip and bags that did not have lower strip. There was a term which was introduced later in the
backpacking backpacks called frames. There are several bags that had a frame what are known as the framed bag. Some bags do not have a frame what are known as the frameless bags. The framed bags are again of two types. The baggage having an outer visible frame called outer frame bag and the bags having frame that is not visible and is inside, the bag structure called internal frame bag structure. The frameless bags are really soft and simple to handle, however they don't give protection to things. The framed bags work great as they provide protection to the stuff that can be found inside however these are not very easy to take care of. Also, they are of high price so this feature doesn't let the average user buy internal framed backpacks.