I weigh about 135 lbs and the size M fits me perfectly. The round neck and three - quarter sleeves are very decent for our age, not too over the top. The light blue base with white floral patterns looks fresh and pleasant. Plus, it has pockets, which is super convenient for carrying keys, handkerchiefs, and such. The fabric is soft and doesn't feel tight at all. It's great for going for a walk or meeting up with friends.