I have/had several of those – the wife and I keep getting issued new ones each time we go away. The older ones were pretty tough bits of kit, in fact I still use the first one I was issued 5 years ago and it’s been manhandled by the kind and considerate RAF baggage handlers at Brize, thrown out of hovering helicopters and dropped out of the back of a Herc on a pallet. Unfortunately, as with lots of good little bits of kit in Defence, the quest for ever reduced costs has resulted in a reduction in the qulaity of those black bags to the point the last one my wife had lasted the outward journey of her latest deployment and then had to be binned. That said, we’re probably at the extreme end of the usage spectrum from what you’ll be doing with yours. Although by the looks of things I could be wrong…
They are still a pretty good bit of kit though for the amount of crap you can stuff in them though.