In ten days the zipper goes, also the laptop barely fits 15.4 resulting in frustration.
Overall, look elsewhere, not worth a single cent

Owner of the bag for 8 months now, I got it when it became trendy and it was being advertised everywhere.
I wanted a bag that wouldn't stress me out about someone being able to open it while I'm on public transportation, for example. For this specific purpose, it's okay.
Recently, I got a laptop, an ASUS TUF FX505DU, 15.6", it doesn't fit even with force. It's not even one of the big laptops. Anyway, if you have a laptop up to 14 inches, then it definitely fits.
The compartments of the bag are sufficient, with accessible zippers both when you wear it and when you access it.
In terms of quality feel, only the gray lining gives you a sense of security. The zippers and the inner lining are quite cheap nylon.
In this price range, you don't have many options. If it could fit a regular 15-inch laptop, I would be satisfied

I have had the bag for about 5 months and I am completely satisfied whether I put my laptop or just books in it. I have not noticed any damage so far, neither on the zippers nor on the bottom part.

Apart from the fact that it does not fit a 15.6" laptop screen, the straps tore after minimal use. It is only suitable for lightweight items, not for laptops.

The main problem is the quality of the zippers.
The inner zipper for the powerbank stays open after 2-3 uses and doesn't close. The outer main zipper doesn't require force because the teeth easily break. The zipper for the back pocket opens and closes with difficulty.
Internally, it is borderline for a 15.6" laptop

If it had a little more space, it would also get a 5th star. My MSI 15.6'' laptop fits in it and it doesn't fit. I thought it would have a little more space. Anyway, it is stylish, looks durable, and for a <15.6'' laptop it is a very good choice.

I believe that for its price, it is the best choice! It can easily compete with Backpack even at double the price... I was looking for something affordable but with good quality and I think I found it! The space is perfect for basic items (books, laptop, notebooks, etc.), of course, it's not a suitcase. It costs 19.90 without a discount but it's worth its money!

The bag is a replica of the XD Design Bobby and unfortunately lacks the following features:

1. It does not have a card pocket on the straps.
2. It only has one compartment on the back side for a laptop (my 15.6'' fit comfortably) and two compartments on the other side, one high and one low.
3. It does not open up to 180 degrees like the original, but only up to a specific angle.
4. It does not have elastic bands for holding pens, etc.
5. It does not have as rigid of a back and sides.

Other than that, it seems well-made without any flaws, it is very comfortable and you don't feel the weight as much, the USB charging port is convenient (note: power bank is not included) which is located inside the side pocket, and it is also beautiful! The zipper takes a little time to get used to as it is hidden behind fabric.

Very good construction. The only drawback, in my opinion, is that it does not have enough storage space. Also, my relatively thick 15.6'' laptop (36.5x27.5x4cm) fits only in the main compartment of the bag and not in the dedicated pocket.