[trampypizza]

I would second Uniqlo, and also suggest GAP. But honestly I am not really aware of either of their ethical records, but have found their clothes to be a good balance of price and quality, and they are about the only shops I can find as a Mid-20s male where you can buy good quality 'foundational' items, rather than fashion fads.

[hguant]

Banana Republic has, in my experience, better quality 'staples' than the GAP. They have excellent sweaters and quarter zips, for example. I have a weird body shape (I look like a Belter) but haven't had any issues finding things that work

They're part of the same parent company (Old Navy, GAP, Banana Republic).