This vest will keep you comfortable all run long.It´s insulated in the front to trap warmth when you first go out, but ventilated, so you don´t overheat.FEATURES:-UA Storm technology repels water without sacrificing breathability.-Durable woven body fabric paired with soft, stretchy knit bottom hem & collar for mobility & comfort.-Strategic 80g synthetic insulation on the front body for lightweight warmth with no excess bulk.-Secure, zip hand pockets with interior media pocket.-Reflective details for greater visibility on low-light runs.-Uses a fluorine-free water repellent treatment.Fabric:- Woven.