Runs a size big, poor stitching

This is the sleeveless version of the Steen's Mountain jacket. Runs a size big (5'7" 160 lbs, small was loose). No drawcord in hem is less than stellar. Useless against wind. I'm having to edit my review because the stitching is coming loose around the bottom of the zipper. It's not only fraying, it's also interfering with the zipper operation. I hope Amazon will take it back.