This is in the cheep bag tidy range but for the price I payed is not bad quality. I bought an similar product a few years ago which has a cheep plastic zip this one appears to be much more substantial.
On first look the quality was not as good as I had hoped but I have used them on several long trips and they are still going strong. I have brought 2 lots in black and white and they are excellent for keeping things from getting creased and fitting more into your case/backpack. I have fit about 12 dresses in the large one. I highly recommend them as they are good value for money and do exactly what they say.