Very good, ergonomic. My hand felt rested. However, the white color turned yellow in the first few days. And it's not from dirty hands. Its texture is like velvet, which probably absorbs moisture from the hand.

This is the second one I buy.
I am very satisfied. I simply wore out the first one from use (many hours a day for 2 years).
I don't have experience with more expensive mice of this type but I do my job perfectly with this one.

I have had it for more than 4-5 months already and I haven't had any problems. In terms of quality, it is very good. Also, I think it has helped me with the problem (tendinitis) in my hand.

Of course, every beginning is difficult! That is, in the first weeks it is a bit strange to get used to the fact that when you click, you also move the mouse a little (right-left). This naturally does not happen with classic mice because you click by pressing the button downwards. Not by pressing sideways. Over time, of course, you get used to it and when you click, you hold resistance with your thumb on the other side of the mouse!

Perfect. Very comfortable in the hand (but always with a mouse pad that has gel/cushion). I have been using it daily for 8 hours for the past 6 months and I am very satisfied.

After about a week I have to say that for its price it's just fine, whoever wants something else should get something more expensive, for small hands forget it

It is a convenient mouse and you get used to it easily, but the white color turned pink where the fingers touch, I don't know why and it doesn't come off or clean.

My first vertical, excellent experience, VFM device, nothing has happened to it in the 2 months I've had it, I highly recommend it!

it has been very convenient for me, the only negative is that it has changed color at the spot where my fingers touch

I got used to it quickly and the fact that it is wired suits me. However, the wheel does not work properly (from what I see in the comments this happens often)

You need a few days to get used to the new hand position but after that, it's ok.
After 4 months of daily use, the scroll wheel developed a problem. The ring turns but not the inside, so it doesn't follow the scrolling.
UPD 18-05-26. After fixing the problem with the wheel and 1 year of daily use, I believe it's one of the best purchases. The wrist discomfort from the old classic mouse also stopped. So we go from 3 stars to 4, and that's only because of the wheel problem, which otherwise would have made it unusable.

I have been using the mouse daily for 2 years and it still works like the first day. The most vfm ergonomic mouse, as well as other products from Trust.

very good comfortable and nice texture in the hand, of course I can't understand which button changes the dpi and how I know when I have the maximum but it doesn't matter much

First day using it. I bought it due to a problem in my hand from too much computer use.
It has two negatives:
a. It doesn't support the thumb well, and you can tell this if you've used other mice that do. It makes a difference.
b. The buttons are quite stiff for me (maybe because my hand is still sensitive) right, left, and middle click.
I will come back after I've used it for a while

Very good for the price and for those who find this shape convenient. It's not as fast as a Razer I had, but I paid around 20€ here and it's just fine!

I bought it because I use the computer for many hours, I can't say that it won me over for simple use, it's very good but when you have it in your hand for many hours it leaves an unpleasant feeling in the wrist

Prefer something that supports the thumb better.
Spend 5 euros more.
2 months later? The washer broke here too.

Excellent, ergonomic, relieves tendonitis pain (even to some extent). And most importantly, because it has a cord, it doesn't require batteries, unlike others of its kind that consume a lot of batteries.

I have gotten very comfortable with it! I think it takes a few hours for someone to get used to it. I only regret not getting the wireless one.

You definitely need to get used to it, but once you do, it is very good and relaxing. With a regular mouse, my hand hurts, but now with this mouse, it doesn't hurt anymore.
What I don't like is that to press the left button you need strength, and with the angle you hold the mouse, sometimes the click and the cursor move at the same time. But I believe I will get used to it. If the scroll wheel stops scrolling, you just need a drop of glue between the rubber grip and the wheel and it's fine.

For the ergonomics, it does require some getting used to, and then I consider it good. However, I am not the appropriate judge because I use a regular one at work, so I constantly switch between them.
The problem I observe and will emphasize is that the synchronization of the cursor with the mouse movement is often lost and overall it has poor responsiveness, at least on my PC.

Update 20/07
Simply UNACCEPTABLE! It constantly desynchronizes! Don't ever buy it! It's going in the trash..

Good build quality, good ergonomics. However, after a year of regular use, it developed a problem with the scroll wheel (does not follow scrolling movement).

Very good choice.
It was chosen due to better ergonomics on the wrist as it was borderline for carpal tunnel appearance.

For its price, it's worth it. My wrist used to hurt from excessive use, but since I started using this ergonomic mouse with this design, it stopped. If you're getting an ergonomic mouse for the first time, don't worry. You'll get used to it easily in 3-4 days. I've had it for 1 year and 4 months now. I only use it for my laptop. Another wireless mouse that I used a lot had its scroll wheel break, it doesn't work properly. However, this one is still great. The only negative thing is that maybe the button clicks are a bit heavier than others. Maybe it's just my perception. For its price, it's definitely worth it. If it breaks, I'll update, but even if it breaks after 1+ year, you can get another one for 20 euros, a freebie

After the second month, the wheel of the product started having issues, for example, the page no longer scrolls up or down using the wheel on a browser... I was disappointed, I didn't expect this.

It's not bad for its price, but I would prefer something heavier and more sturdy for this specific type.

Ergonomic and comfortable. It's worth every penny and more. It takes 1-2 weeks to get used to it, but after that, you'll love it

I also have the wireless version of this mouse. I decided to buy the wired one because it is much lighter. It is worth it for those who work many hours with the computer, significantly reducing strain on the wrist and increasing productivity.

Purchased in July, lasted until December with daily extended use.
The scroll wheel started skipping.
It was a good test though, to see if this type of mouse suits my work and it was okay.
It takes a few hours/days to get used to it, but from the first moment, it feels better in my hand.

4 stars because for the 13€ I paid, it held up just fine.

I bought it for my wife as she sits at the computer for at least 8 hours a day. It is generally for large hands, but it fit her well. Very good for its price. Now I will probably get the same one in wireless for myself, the position of my hand seems natural.

So far it is very good, quality and seems to be worth the money

Just after 1 year the wheel broke