The backpack has behind him completely survived with me a tour of New Zealand and very good. The material is very robust and is in place ... just madness. I have transported about 25 kg and the. On hiking trails in uneven terrain of New Zealand mountains But ... it does not matter after that weight is simply too heavy backpack it does not matter. He also survived the transports for various flights, bus rides and ferry. What I missed however, is an open pocket on the side for quick put it back on things that may be at hand. So, who do not necessarily want to spend a lot of money and not a fanatic Trekker is, this backpack is a good choice.