FIT AND DESIGN: Sleeves zip on-or-off quickly, to convert between and jacket and vest Lightweight and breathable Rear upper mesh panel for ventilation Two-way zipper allows ventilation from top or bottom Dual side hem cord locks to adjust fit at waist Front zip hand pocket Rear zipper pocket for storing sleeves or essentials BioViz reflective elements for low-light visibility TECHNOLOGY: Durable water repellent (DWR) treatment sheds light precipitation Wind protection