The Patagonia Women's Ridge Flow Shirt is a highly breathable, moisture-wicking and fast-drying running top with a keyhole design in the back for added venting and aesthetic detail. The Ridge Flow shirt is made with lightweight 70% recycled fabric, with unique jacquard that allows for faster drying, wicking and breathability. The soft, comfortable next-to-skin feel, without sacrificing performance during use, HeiQ┬« Pure odor control and reflective logo are all added features to this super comfy Women's Patagonia shirt.