I have a small build and tried a lot of lightweight jackets. This one fit just right, and is slim enough for me. HOWEVER, make sure you check every seam very carefully. My partner enjoys mending and sewing and she now has 6 places to repair before I even start to wear it. There are open seams at the collar, cuffs, zipper / placket, and the top of each of the outside pockets are tugging on the fabric and will rip it very quickly. She will reinforce everything and work on the seam open seams. ThisSee full review