"So far I have told you about the immediately measurable attributes of the Brain Bag such as size/volume, simplicity in design and the ability to get a straight black colored Brain Bag. However, the durability element had really been speculation based on reviews I read on the internet, and based on supposed typical use of the backpack. After over three years of being put through-the-ringer, I can confidently say that the durability of the Brain bag is superb. It has survived LSAT prep, numerous trips (usually the only thing I take when I travel), and most importantly 3 years of law school. It has withstood the attempted destruction of con-law textbooks and saved me the ire of being the full-blown-travel-luggage toting law student."
Read the full review at the Alien Pebble (many great photos). See also: the Brain Bag.