I bought this J.Crew Stewart tartan plaid top in size medium a couple years back. It is just a little too small for me and I only got the chance to wear it one time. It has a little button at the back at the neck and besides that it’s just a pull over style. It is 98% organic cotton and 2% elastin so it does have a little bit of stretch to the fabric. I took measurement pictures to give you an idea of pit to pit.