It says to hand wash cold and line dry

(I hang dry, regardless), did not get wrinkly, even under a sweater

Make sure to wash cold/delicate and hang dry.

Wash in cold water and hang dry still looks new

Only downside is that it wrinkles easily, so when I hang dry I have to toss it in the dryer for a couple minutes before I wear it.

I have another top from MBJ that shrunk an inch when I washed it (hung dry)