The opposite of fast fashion would be cruelty-free fashion, also known as ethical fashion.
That makes feathers, fur, silk,leather, and wool all off limits.
PETA even has its own logo for items that are vegan (via PETA).
It ideally should also describe clothing that is made and distributed with the least negative environmental impact.
Often fast fashion is made by underpaid young women in dangerous conditions (viaBorgen Magazine).
But slow fashion may not necessarily be vegan / animal-free.
