Often I do not need backpacks, but this time it had to be one and the same also really what endure. I bought this at a special action - along with another for comparison. For almost the same price this was considerably larger and better organized storage space. Actually, I was suspicious just because of the price - can be as inexpensive well? - But the concern was unfounded. The planned trip is now behind me and the backpack is a proven design, the non-prissy treatment survived without complaint by various airlines. The many storage and lashing options were really great, I even outside or snorkel fins housed. 18 kg I have thus promoted the backpack but I trust more to. The only remaining open request to him is that he should have two legs and start walking itself ;-)