This backpack seems strong, we must see to use, I think the plastic zippers are the first to show signs of fragility. The bag is comfortable, I would say almost ergonomic, but it tends to keep warm at the back as it is set close to the body (I think this is the case of most of the backpack!). Otherwise all compartments are convenient, however this bag would have been perfect if it had some centimeters more width because it is still close enough! To date, value for money is one of the best backpack I know.