A backpack is probably the most versatile and use item that everyone owns. Everyone needs a backpack, no matter what the purpose may be. Backpacks are easy to carry around, they’re useful because you can fit a lot of stuff into them, and most importantly, they are made of some pretty sturdy material so they can carry hold quite a bit of weight in them. Whether you call it a backpack rucksack, or a knapsack, there is no denying that a backpack is probably one of the most useful items you are going to have in your possession.Because backpacks are so useful and versatile and have been around for such a long time, you are going to find a variety of options for you to choose from. Because like pretty much any item that has been around for a long time, the backpack has been modified and improved in different versions and varieties to suit the needs of people today. Because our needs are so diverse, and each person may need a backpack for one reason or another, so too have the backpacks of today become diverse to better match our needs.The first type of backpack is probably one of the most basic types of backpacks around – the simple backpacks that are used by students all over the world. Although they also go by the name of schoolbags or bookbags, there is no denying that just about every student you see is going to be toting around one of these backpacks. They are useful for keeping their school items, books and just about anything else they may need in there. Everyone from grade school, high school and right up to university is going to be using one of these, and this is probably one of the most popular type of backpack around.The second example of the backpacks are the backpacks which are used to carrying around certain items. These backpacks are much more durable and are more specifically designed than the ones used by school students and usually, they are built to carry around items like laptops. These backpacks usually come with extra features like a padded interior for example, because they are used to carrying out specific items.The third type of backpack is also rather common, and frequent travelers especially are going to be used to seeing it – the backpacks for travelers. Tourists and travelers travelling to other places for a period of time are frequently seen carrying this type of backpack around. They are built much bigger than your ordinary average backpack because they are meant to fit a lot more items in them, hence they are used for travelling. They also come with thicker straps so they can be easily carried around, and they are able to hold a heavier load because of the material they are made of.Then there are also the backpacks for outdoor activities, which are designed for backpacking and outdoor activities, backpacks for more professional use like those used in the military, and plenty of other backpacks options out there for you to select based on your needs.