California has suddenly warmed up in the 70's here giving us all a Spring teaser. I love this sweater as it is breathable and the sleeves push up nicely for those middle of the day warm spells. I was recently asked about how I wash my sweaters and I put them in the washer on delicate with cold water and lay flat to dry. I rarely ever dry anything.
As far as sizing goes, Free People runs BIG, so you could size down and be fine.