It good what I use it for
I was going away for a few nights so thought of a large hold all/rucksack. Cost was a large factor, I don't have a lot of money just now. These were on sale for £2.50. I ordered two and picked up in store. Absolutely ideal. Carried my clothes and laptop etc for four nights. Although as they fold into their own pocket their best use would be as an extra bag. Folded it could be carried in a jacket pocket as a spare bag, handy for shopping, avoid the carrier bag tax.
Only criticism, I found carrying two awkward. A shoulder strap would be handy. Or more comfortable straps, I found them awkward carrying on my back too. Ideal carrying in hand. I'm impressed with their strength for such a cheap bag.
I hope decathlon continue this product at this price. Great value for money
Cost. Folds into it's own pocket
Not comfortable carrying over the shoulder
My daughter uses it for light PE kit at school. Not sure it would be good for more substantial kit but as it is, it suits its purpose.
Lightweight, easy to pack away, useful.