The Canari Women's Velocity Shell is a super lightweight, packable shell that will protect you against the elements. The WindShear fabric is lightweight, which means it won't get in your way. It's also windproof and water-repellant. There is a full zipper at the center front that features a draft flap to keep out the wind and rain. It's got a 9" back zip pocket with reflective trim for added visibility as well as storage that also converts to a stuff sack with waist attachments. Other features include reflective trim on the front and back shoulders, a back drop tail for added coverage, and elastic bottom and sleeve hem. Material: (Body) Polyester WindShear Fabric. Size Chart (Chest Measurement); SM 33-35, MD 35-37, LG 37-39, XL 39-42.