Nylon shell fabric has a C6 durable water repellent (DWR) finish that repels light rain and stains Stretch panel fabric allows the jacket to move with you when you're on the go Exposed polyester insulation and Aeroknit open-knit construction create air pockets for temperature-regulating warmth and excellent breathability Air-permeable underarm gussets enhance breathability Features articulated patterning with an athletic fit Internal bottom hem drawcord lets you customize the fit Hand pockets and front zipper feature reverse coil zippers Great pre-owned condition. I love it, I just grew out of it!