The Pack Vest is a a lightweight 32gsm nylon half-zip vest windbreaker that is perfect for running, hiking or layering on a breezy day. Built with half zip construction, a single chest pocket, and reflective detailing, the vest brings functionality for warm weather activities. Its ultralight nylon fabric cuts wind and protects against light rain. The vest packs into its chest pocket, making it easy to toss into your bag when out and about.