It would be nice if it had padding with rubber bands to hold the user's head in a more comfortable way.

It is a first taste in virtual reality. Nothing more, nothing less. I chose it without regretting it because I wanted to experience the feeling of VR combined with affordability (something that doesn't usually go together). I think it's fair for its price, but obviously with a few extra bucks, there are even stronger options available. You don't have much to lose, you can give it a try.

Well, look. It may be cheap, but you definitely feel the cheapness. To understand, mine was missing the cardboard that holds the phone in place, so I had to use tape. Well, I won't even discuss the light leak, let it go, but that's not what bothers me the most, and at this price I can forgive it. Also, this particular VR headset is an ergonomic nightmare since the opening for the nose is makeshift and poorly made, and the curve that fits the forehead doesn't fit everyone's heads. (friendly advice for those who buy it, make sure nothing hurts) Final conclusion. Should I buy it? Does the low price justify these drawbacks? (because we only talk about drawbacks) In my opinion, no. Yes, it's cheap, but it's just a piece of cardboard. If you want my advice and want to have a somewhat decent low-budget VR experience, spend 5-10 euros more and you'll get something much more quality, like I did. Get it only if you want to have a first taste of how VR works with very little money.

For the LG G5, which is my mobile phone, it is quite good.. as a first experience, it is definitely worth its money!!

I bought it to start my "journey" into the VR world. I have a Xiaomi 5.5 inches and I have to hold it so it doesn't move right/left. It doesn't have assembly instructions and it requires some attention, but the notches are fine, it has (where needed) double-sided tape, although I added another one since I had to open one side 2-3 times. One negative thing that I can't do anything about is that in the default Google app https://play.google.com/store/apps/details?id=com.google.samples.apps.cardboarddemo everything appears double (so not correct), while in another one (with planets) it appears correctly. I tried changing the lens orientation, but I had the same result. Overall, you will deal with it for 10 minutes, and then (like me) you will want something better :)

Very mediocre!
Suitable for first-time testing.

Positives:
1) Very cheap.

Negatives:
1) Insufficient instructions on how to assemble.
2) Very poor notches. The notches do not have the correct dimensions almost everywhere.
The lenses do not stay in place because the notches are completely wrong, resulting in a lack of arms to hold them, so they come off their position very easily :(

The VR headset is very good. I don't know how the magnet works, I have put it on but it doesn't do anything. Other than that, it's fine. The assembly is very easy and simple

Very good, only the assembly was a bit difficult, but otherwise it works fine, the magnet holds perfectly. The only thing to be careful about is that the mobile phone does not have a cracked or heavily scratched screen because the image appears blurry.

This particular product is very good for its price. When combined with the appropriate/compatible applications, it creates the perfect introduction to the world of virtual reality. The cardboard is relatively durable, although it tore before I even assembled it.

Update 20/6/2016

After 3 months of purchase, I have the following to say:

1. The magnet works perfectly with the mobile phone.
2. If your phone has low resolution, the image will be blurry

I didn't like it at all that I had to assemble it myself. It's not at all of good quality. It would have been better if I had spent more money and bought a better one.