i am 5'4, 130 pounds, my waist is 29", and both small and medium fit well. Medium fits baggy, and small fits tighter but with enough room for comfort. I included my info. as I find this info. useful, and when I was determining my size, I could not find such helpful reviews.
The inside keeps pilling even when I wash it it keeps pilling. I’ll be walking around my house and ill see small purple pieces and it’s quite annoying. I was expecting it to be really comfy because my friend bought a pair years ago and always told me how comfy they were.