Flattering fit!I got this jacket as a midlayer for an upcoming trip to Iceland [over some merino wool/synthetic baselayer thermals and under a water/wind proof outer shell]. I can tell you it's lightweight, and just wearing around the house [68�] over one base layer it doesnt feel too hot but seems like it will insulated well when layered appropriately.I am nearly 5'4" and typically as size 10/12 [L] with a 36DD bust. The suggestion was to get an XL but I wanted a more fitted fit so took a chance in a L. I am very glad I got this size; it is perfect for wearing over one or two baselayers, and still fitted enough to be comfortable beneath my not-too-roomy outer rain shell. The fit is very flattering in my opinion. I love the longer length sleeves [much like I find Prana tops] and while the cuffs feel slightly snug, I think they will wear well for insulating body heat and can be stretched out a bit. [See photos for reference!]