It seems like a good layout. Well made, getting it on sale was what sold me, I have a bunch of carry on bags, each one for different situations. this seems like it will be good for flights and train travel. Harness and hip belt are well padded but still easy enough to tuck away. My Osprey Porter 46 is not. If that is packed full, it is really hard to put away straps. And the hip belt on that bag is useless, too thin.I think you can use the rain cover when you put the bag in the overhead compartment so the material does not wear away as many people seem to whine about.I've had this bag for a year now and feel compelled to write a review. I absolutely love the thing. It's been a strange year and this bag has spend more time packed than unpacked, it's crossed the Atlantic 6 times and has been stuffed in many different sizes of overhead bins always without a problem. Zippers and straps are all super sturdy, apart from a few scuffs on the rubberized exterior, it's just like the day I got it.The carry-on capability was a big sell for me and it has delivered. It is really the perfect size, I regularly keep about 9 t-shirts, boxer shorts, socks, an extra pair of pants, a jacket, rather large toiletries bag, laptop, travel monitor, and various electronic dongles. It holds everything I need for months long trips, and I get to just walk out of the airport without waiting to collect baggage, killer!In terms of comfort, I wouldn't hike the PCT with it, but I have walked for hours with it without undue pain. It tends to ride a bit low and lacking a proper frame the hip belt doesn't take the weight as well as a proper backpacking pack, but if I ever get a bit annoyed with it I just remember how damn convenient the thing is and trudge on.The traditional suitcase opening is unbeatable, I hate living inside with a backpacking pack. Having to dig around from the top every time you need a shirt gets super old. This thing opens up and everything is available in one (ish) layer.I highly recommend this bag, I know I'll be only using it for the foreseeable future.Wonderful pack, I bought it to specifically replace the one I bought when they first came out 5-6 years ago. The old one was a great travel companion as I traveled the world with it, but with hard use, eventually the material on the outside became very worn. The newly purchased pack has more compartments, and I am thrilled with it after taking it on a couple recent trips. It is an awesome traveling pack and I wouldn't change a thing.I love everything about this bag but the hip straps - unfortunately that's a pretty critical part of the bag!It is a bit long for my short torso - I'm five feet tall. But even when the hip straps fit comfortably they're too high or too low. The load lifters worked nicely to offset the weak hip straps, but both could be a bit more durable.There are lots of cool pockets! I'm not sure why the bag comes with its own rain fly when the outside seems somewhat water resistant. I've also noticed after about a month one of the arm straps comes loose on its own and needs to be constantly readjusted, which is kind of a pain.Overall this is a cool backpack that you can cram a lot into.great product wish it had a wheel option.I have found this pack to be very well designed and perfect for my one bag trips. I’m impressed and very pleased with the purchase. I used it on three trips so far and very satisfied.The 40L is great for international flights on larger aircraft. But... when fully packed, it will not fit into the overhead bin on shorter flights on smaller aircraft.I have had this pack for a few months now. The Allpa 28 wasn’t quite big enough for me. I use it for overnight work trips and also for weekend trips. I love the functionality of this bag.