Previously on a business trip, I used my Smassy Everyday Bag as a carry-on luggage and it survived the grueling trip unscathed. On another business trip overseas just a couple of weeks ago, I decided to "borrow" my wife's Smassy backpack and try it out during my 10-day trip. On previous trips such as this, I would always use my large backpack because of its capacity and versatility (many compartments and features), but would inevitably end up with shoulder and neck pains for weeks after due to packing the large bag to capacity; this was the impetus for me to try the smaller, lighter Smassy backpack that shouldn't allow me to pack as much stuff, or so I thought... To make a long story short, this Smassy backpack was every bit as strong as my Everyday bag. I tossed it around, tugged on it, and drug it through plane rides, train rides, and car rides. Not a stitch came undone, a zipper got stuck, nor mesh ripped apart. It seemed as if I was discovering a new secret zippered or non-zippered pocket every minute when I started using it, and even after you filled them all, the main compartment still had plenty of room for other stuff even before unzipping the expansion zipper. The low-profile zippered pockets on the back of the backpack provided great privacy and security for my sensitive IDs, documents and monies, while the mesh pockets on the sides provided the perfect places for drinks while hiking up and down stairs in the train station. This Smassy backpack is now mine!