It's easy to fold and pack into larger carry-on
588823
It's easy to fold and pack into larger carry-on, and then unfold it to use the backpack to travel a place. Now I don't have to carry two bags on board. Absolutely love it.
2492135
It saved me a lot of money when I moved to another state.
Really huge bag. I was able to pack so many clothes that it was really hard to lift it.

Meets most airport size requirements. Just be careful, it's easy to pack more weight than allowed by aircraft companies.

I also pack my BMX bike in this bag (if there are any BMXers)
It survived the flight, so in my opinion, it's durable enough.

There is no shoulder stripe, but in my opinion, this bag might be too heavy for the shoulder strap.
2714902
Comfortable and light as a feather. The zippered pockets and interior pouches are very well layer out. In its folded state, it's very manageable and easy to stuff in a suitcase.
437144
Excellent. I was able to pack a lot of things in the bag and it was easy to maneuver.
3366040
I travel a lot and this backpack has been a great addition to my carry on luggage.  It's small enough that it fits comfortably under the seat of even smaller commercial aircraft, yet large enough to fit anything you might want.  I usually travel with my laptop in addition to a number of books, papers and other items and there's always sufficient space.  You can fit in far more than the size initially suggests.

There's a lot of good features built into the backpack: there's a net external side pouch for a water bottle; an internal slot for an ipod with a space for just the headphones to run to the outside; good padding to separate a laptop from other items; padded shoulder straps for comfort; three different external zip pockets; lots of seperated areas inside the pockets to easily seperate items and many other small features you discover as you use it.  One aspect I like is the vertical zip on the most obvious front pocket.  This makes a convenient area to stores items you want readily accessible, but the direction of the zipper means it would be a challenege for someone to get into that space without the wearer's knowledge in a busy airport. The material is durable and the color helps prevent dirt showing.  When empty, the backpack is very light so it's not inconvenient to carry "just in case."

I thought I could never downsize from a larger backpack I was using but this one has convinced me.  This is a great product.

Update: After three years of regular and fairly heavy duty use (this was the primary carry on in three moves and dozens of flights), the top of one of the straps has ripped.  I believe it can be repaired, and it would not change my rating of the product, as it has endured significant use, but worth noting that the durability does suffer after awhile.
1863219
Carrying the 24 lbs Diono Radian RXT through the airport became much easier with this handy packpack/bag.  Fits the seat perfectly, and I was also able to fit the rear-facing bottom attachment inside when angled in just right.  It's much easier to fit in the bag than some reviews let on, as long as you fold it up right.  I do have some complaints:
My wife and I are average to below-average size.  I'm 5'9" and 170 lbs, but I could not make the straps short enough and there was WAY too much extra slack in them which made it more uncomfortable and difficult to carry than it should have been.  I also forgot that when bending over to pick up my son and it would come sliding up and crack me in the back of my head because of all the extra slack ( a good foot at least ).
Second, the seemingly robust & durable material just doesn't hold up to airport baggage staff (even when checking it at the gate).  After a non-stop TO Orlando, the bag had several worn/scratched areas and part of the zipper was smashed.  After returning home, it got even worse.  At this rate I'll be able to use it for 3-5 trips before holes start appearing.  I didn't have problems with the seems coming undone or the strap anchor points ripping or breaking after one trip, but I could see that being a problem for trip 2 or 3.  When picking up the bag by the straps I fear the middle anchor point will just tear off the bag.

All in all I'm happy with the purchase, as the Diono is a big, heavy, expensive car seat and this $30 bag protects it. The damage done to the bag would have been done directly to the seat without it, so even if this one doesn't survive long I'll be investing in another.  Hopefully by then a newer more robust version (hard-shell case??) will be available.
2396973
I did a lot of research on maximum-sized carry-ons, and ended up buying this. I'm really happy with that decision. They've made the most of the space available for a carry on. The handle seems like it will last, as will the rollers. It looks great too. I ended up buying the matching backpack so now I have a set... I'm happy with this purchase.
354435
It is the lightest carry-on bag that maximizes the airlines dimensional requirements for carry-ons. Almost everything I bring goes into this one bag, except for some personal items.  Easy to load into the overhead compartments, and being soft-sided, the airlines don't seem to notice that on my trips home it's a little bit larger than when I left.  Can't beat the price, either.  I usually wear it as a backpack walking through airports and it's comfortable. With all restrictions for carry-ons, including the weight limits, this bag at under 2 pounds, lets me maximize my personal belongings.
2828190
The lightweight tarp-like material makes it easy to fold up and bring along as an extra bag in my carry-on suitcase. It's tough enough to check as baggage on the way back when it's full. Would you believe that it also fits under the seat on an airplane when full of stuff? I always bring back big bags of Garrett's popcorn when I fly thru O'Hare (Oprah's favorite). I put it all in my weekender, zip the top and stow it under the seat in front of me. The handles are sewn in so even when I carry really heavy stuff the bag handles it all. It's a must have for air travel.
2280388
I bought this specifically for a trip to Europe, and it did very well.  Its large enough to fit everything I needed, yet not a behemoth so its light enough that I could put it over my shoulder when we had steps or uneven sidewalk to contend with.  The roller option was handy on smooth-surface flooring.  I had planned on tossing it when I returned home, but because its a soft-duffel it collapses flat so easily that I ended up storing it my closet and now I use it for weekend trips.

For wear and tear, it made it across country and overseas and back with no problems from the air baggage handling, and it was tossed about on approx. 5 train rides and 4 bus rides and its held up fine.  I did use a baggage strap around the middle to help stabilize it a bit, but that was more for my peace of mind than out of necessity.  Obviously its no backpacking rig, but for standard commute/travel, its just great.
3591658
Larger than expected, well worth the money. The convenience of it collapsing makes it so easy for traveling.
4934377
I thought that this may be a little large for my 2 year old Grandson, but he loves it. It's easy for him to push and pull, and easy to unzip. FYI: The handle does not lock in the pull out position. I wouldn't trust it for airport travels, unless you were to use it as carry-on luggage. I'm not sure it could withstand a lot of packed weight; it doesn't seem to be that durable. Perfect for overnight stays with grandparents
1825615
My older and larger computer travel bag was getting too heavy to carry around with a shoulder strap, and no longer fit under seats in planes.  When I bought this Samsonite mobile office bag, I knew that I was going to be traveling on some regional jets with smaller overhead bins, where most carry-ons are too big and have to be checked.  I'm pleased to say that after being on several smaller regional jets on a recent trip (50 - 80 passengers), that this carry on worked as advertised.  It fit in the overhead bins with no problems, even packed fully with a laptop, change of clothes, and other items for an overnight stay if my checked bag didn't make it.

I found the handle to be long enough to easily roll this bag through airports without whacking my heels or needing to stoop (I'm 6 feet tall).  The computer was well protected, and I like the general overall design of this piece of luggage.  I was also able to safely transport my good digital camera with the telephoto lens detached in the larger section of this carry on, and there was room in the other compartment for battery chargers for my mobile devices, etc.  It was a bit of a struggle to remove the laptop computer when going through an airline security check, with the bag being fully packed and no room to spare.  I had to fully unzip the computer section (in the middle), and undo 3 Velcro fasteners to slip my MacBook Air out of the inside sleeve.

I am very pleased with this purchase, and plan to keep it for a long time.  My shoulder also appreciates it too, since this carry-on rolls smoothly and is easy to walk with in airports.  Most importantly, I don't need to be concerned about whether it will fit under the seat or in an overhead compartment in commercial aircraft, as was the situation with my older wheel-less computer travel bag.
3990791
This fits perfectly into the domestic United carryon bin. I haven't tried to fly internationally with it, but it's smaller than my old international carryon, so i don't anticipate any problems.

The handle extends easily, and it's super easy to walk it through the airport. The wheels swivel in just the right way to push or guide it along with only minimal pressure. I especially appreciate the handle on the side, which makes loading it into an overhead bin very easy. I was able to pack for a solid week's holiday with plenty of room for dirty laundry and souvenirs. It feels quite sturdy, and I'm expecting to get many great trips out of it.
3415343
We bought this so we can travel with our dog and not have to carry the large plastic crate that doesn't fold flat and take up a lot of room int he back of the car.  This folds down easily and is flat and we can pack things on top of it when we travel.  It is nice and big and roomy.  I did add a Kong crate "mat" to make it more comfortable and a cover to make it more like the crate we use at home.
4308220
Luggage has a lot of room! I packed for a week's vacation and had room to spare. It also for easily into the overhead, so there wasn't a need to check the bag...which is very important in a carry-on. The piece rolls easily without much effort, so getting thru the airport with it is a breeze. Very happy with the purchase.
985841
easily folds up fairly small and flat.  Roomy pack for it's size.  The straps will cut into your shoulders a bit because there is no padding to keep the size down, but it's a fair trade.  Used it for travel and then folded up and put into one of my other bags easily.  Nice color.