This is a category I only began investing in over the past couple of years. I really like to change into soft clothing too and these are my favorites:
Lululemon dance studio jogger (can't collect this as a find):
https://www.sweatybetty.com/us.....&glCu
--> I wear these with one of my soft tanks that has some support as I don't like to wear a bra
Sweaty Betty luxe fleece matching sweatsuit:
a) sweatshirt (can't collect this either) -- it's very cropped but with the matching sweatpants it doesn't leave my midriff bare
https://www.sweatybetty.com/us.....&glCu
b) pants in Finds -- I got them in the purple and also navy
Athleta bliss romper:
https://athleta.gap.com/browse.....s#pdp-page
I also have some wide, soft pants from Athleta with a soft, foldover high waistband, but Athleta doesn't sell them anymore, unfortunately.
Lululemon Speed Up shorts -- I prefer the High Rise (the waist band is very soft and comfy) but I have the midrise too, which I wear for hiking / running and they're also great:
https://shop.lululemon.com/p/w.....olor=18726