Great Travel Pack
I use this for travelling abroad for short trips and longer (weeks) trips so I only need to take carry on and when also travelling on trains, busses and local transport its easy to travel around with. It is also great from a security perspective when on packed transport. I use this for longer trips also where I can wash clothes, but it easily fits enough for a week long holiday - packing sensibly. At 5.10 the pack fits me well and is easy to adjust depending on the weight if needed.
A quick side zip would be great, but I also have the V Tech pack also which I use daily when travelling.