I thought I "knew" this but this T-Shirt video let me down the rabbit hole: https://youtu.be/CMoZjcpgivM

Which means I now feel obligated to recommend:

https://youtube.com/@theironsnail

https://youtube.com/@shiftfashiongroup

Both have great videos on garment quality. But with the inevitable caveat that they are in the business themselves. I take it as an insiders perspective and watch out for content marketing (while being tainted!).

It seems to be easier to find better clothes if you are a bit of a hipster type. Those kind of stores still care for quality. My friend has such a shop and tells me that even for them it gets harder to source good vendors as it is a continuous race to the bottom.