Brand new, with tags, women's Thermoball vest by The North Face. This is size small. Thermoball is a Primaloft (synthetic) insulation specific to The North Face that's very warm and very light, and keeps you warm even when wet (unlike down). I love these vests, and they're such a versatile layer. I'm selling this one because I have two others and that is plenty, haha. My oldest Thermoball vest has probably been more places than most of my gear - because it's so versatile it always comes along. My oldest one is about 5 years old and doesn't even have any holes. They also wash very well and the colors stay bright, even after repeated use.
The tag on this one says "slim fit" and I agree. It fits me great (but not tight) over a fuzzy sweater and I'm 5'8" and 125 pounds.
A note on the color: the color is not super accurate in these photos. The vest is teal (not green and not blue). But it's a little darker teal than in the pictures of the front and back of the vest.