Super stretchy and breathable. The fabric isnt a gross plasticy one, has a nice feel to it even tho its clearly synthetic, like old navys work out stuff. Had a friend try it on who wears a medium and he decided its his, says "its a nice shirt, feels great". So i dont have the light blue one but the others dont look gross when theyre soaked in sweat. Wore one in the rain on my walk to work and where it got wet dried pretty fast. Faster than my cotton shirts at least. It doesnt have HUGE floppy arm holes so i can wear it without it moving to the side and having my whole sports bra out n proud. Neck isnt super low cut too.