As of late, it's been difficult for me to find clothing at retailer that fit's true-to-size. i'm 5'2" and 107 lbs. and i've had to return several pieces because they were too big on me. this versatile piece fits true-to-size. i purchased an xsp. like the previous reviewer, i've tried this with a couple of different long-sleeve shirt and tights combinations. i think this will work in the spring and fall, too as the material is in between heavy and light/airy. great for work.