While taking your lap top to class or in an aircraft, it is always advisable to ensure the computer is safe. A good back pack ensures that your laptop is safe and also gives room to your other stuff that you may need to carry. There are tips on how to choose a back pack courtesy of http://www.just4laptops.co.uk
Before purchasing laptop backpacks, look at the padding and the pockets. This is because the laptop should not be surrounded by a lot of padding and therefore needs to be kept in a firm pocket. It is always good if the pocket holds the laptop a few inches from the bottom, and it ensures that the laptop is not hit once it is put down.
A laptop back pack with many zippers should be avoided as they are the first to wear out in the bag, and they also add unnecessary weight. A back pack should not have as many pockets as they can be confusing and space consuming, and the one without is hard to organize. Choose an appropriate size. Do not choose the too big or small one and should be as light as possible. Also try it on to see how it looks like and whether you like it too.