Seriously, this became my favorite nursing top after the first wear! It's now my go-to tee. I ordered two and came back for two more, I just wish there were more colors in my size so I could wear one for every day of the week! The fabric is so incredibly soft and light weight despite the layers that help keep your midriff covered in public. I have not sweat in it and that's saying something as a newly postpartum Mama living in south Louisiana! Despite being a nursing top, you can't tell at all, just make sure to have the inner panel lined up after you're done feeding your baby.
I've had breastmilk, snot, and some other ULO (unidentifiable liquid object) spills, all came off easily by lightly pressing with a cold damp rag and left no stains. For washing, cold water on gentle/delicate cycle and line or hang dry will help keep the fabric looking fresh.