Well I can tell you all about it! It has a front big zip bit on the flap that is a bit annoying as all front pockets on messenger style bags are as if it's stuffed you can't close it properly. The flap and a big zip along the top open to the main compartment. It fits four of our real nappies in easy with all the other crap we carry about. There are four mesh pockets, two on each side, plus two little mesh pockets on one little side and a velcro-in bottle bag on the other little side. Outside there is a mesh bottle pocket on one side and another insulated section on the other. The back has a parent section with the usual organizer pockets but you can't fit loads in there as it's no gusseted so it depends how stuffed the main section is. It comes with a pretty decent changing mat zipped in under the big flap. Then there is a mobile phone and key section on the strap. At peak carrying (being nappies and weaning) on a whole day out we will have in it: 4 real nappies; wet bag; loose change mat; couple of cups; couple of tubs of food; wipes; spare vest/top/trousers; maybe sunhat/coat etc.
Stuff that's broken after 2 years: the zips holding in the changing mat have gone but that's because we stuff it so full I reckon; the foil lining of the outside bottle section has torn - again we tend to stuff it, not with bottles but things with sharp corners; the velcro that fastens the front flap is a bit knackered, again because we stuff it so it is rarely properly closed.
They are totally all that expensive unless you get a really small one which is no good for a day out and definitely not for real nappies. I've been happy with it but I'd like something a bit more colourful this time.
I'm looking now!