I have these. Two pairs which I've been using for >2yrs
they're really good for the price and solved my issues with shoes, I definitely needed arch support and the 'common' insoles I've tried didn't work. Found these on Ali, bought one and another after around 3 months to have as spare (they actually went out of stock for a year or so, came back some months ago)
my experience is that they work really well, but the plastic on the arches is not the best, it starts to soften after some time. So like I started with the no.3 arch but it turned to a 2 effectively, so I had to change to a 4 to keep the support as it should.
Also the glue between the plastic part below and the foam is not good, if you get any water in it'll detach. But easily solved just glued back together
other than that, is really nice, and for sure worth the price. A fraction of the real one, but of reasonable quality, and the customization is worth it.
I have owned a pair of G8 Performance 2620 insoles for over 3 years and 30,000km. Happy with them, but not the price for replacements as they do wear out. So when I saw these copies I purchased a couple of pairs.
They look almost identical to the G8s, so much the arch supports looks and feels the same and are interchangeable. Which is good news as the arch supports do degrade over time (a comment BikeFit James made about the G8 on YouTube, I have experienced with my G8 and
but the plastic on the arches is not the best, it starts to soften after some time.
The difference is in the sole, 2620 are available in 4 sizes, the copy is one size, looks based on a large (I have a med 2620) and can be trimmed to any size between 41 and 46.
The sole looks to be made of similar but slightly different material
The heel and footbed attachment points sit flush with the original, the copy they protrude a little from the sole.
Very happy with my purchase and will make good use of them.