When I travel, my carry-on's include my laptop in a small wheeled case and a Canon camera bag for my dslr.  But I also want to be able to carry all the medications I take, several changes of underwear and socks, razor and tooth brush, and whatever else might be needed to get me through a couple of days if my checked luggage gets lost in transit.  This bag allows met do it all.  I can put my camera bag in this duffel bag and still have quite a bit of space for other things.  The bag is perfect as a carry-on: very roomy but carry-on size, strong, light weight, good handles and straps, attractive.

When the bag is open, there is a zip pocket at one end.  This pocket becomes a pouch that holds the bag when desired.  Fully open the bag is 22x12x12, in pouch form it is 8x8x3.

I recommend the bag without hesitation.