This backpack was ideal for our trip across China. We did a 10 day four locations trip. Being a large man I was concerned it would fit my clothes and all the things needed for travel. But I was pleasantly surprised. We used suited nomad compression sacks and everything fit wonderfully. I’m 6’3” wear XL shirts L pants. I was able to pack 6 pants, 7 tops, 7 pairs of socks, sandals and hiking shoes, the 18L bag, full toiletries, outlet converter, sleeping mat, and camp towel. We felt these packs were ideal for carry-on bags and they were plenary comfy to wear while we walked to our hotel/hostels and to and from public transit. We used carabiners to attach our batac packs to our larger packs but we found that it would be better to have just the one pack when traveling. Overall these were comfy when fully loaded. Held everything we needed. And looked good while we did it. The bags held up great through two international flights with layovers, two regional flights, one overnight train, and many taxi/bus/train rides. I Highly recommend this pack for the traveler who doesn’t want to deal with baggage claim or lost luggage, and who wants to move quickly through airports and public transit.