I didn't like that it is high-waisted. As many mention, the knee pads are a bit lower than they should be. For the pants to fit well, you have to pull them all the way up, possibly with the help of a belt, and you can also roll up the cuffs to bring the knee pads to a higher position by changing the spot where the Velcro fastens.

Excellent!
Suitable for both winter and summer.
It is elastic, although you might need a size larger than your regular jeans.
And practically, you wear jeans and also have protection

I have it here for a year. It shows quite good quality for its price. I use it both daily and on a 1000km trip in Greece last summer. On very hot days, the legs do get hot, of course, but above all, it provides safety. However, it also has zip openings to let in some air and cool you down. So far, I haven't had any issues. Just make sure to choose the right size as the knee protectors are a bit low for me (you can also get hip protectors for an extra 8€).