What Our Gearhead(R) Experts Are Saying:"I use this vest when I know I'll warm up fast but still need protection from wind and chill. It keeps my core warm without cooking me, and the WINDSTOPPER(R) tech works great when the wind picks up mid-run."When temps drop but we're still chasing pace, the CONCURVE WINDSTOPPER Insulated Vest keeps our core dialed without overheating the rest. It's built with GORE-TEX WINDSTOPPER(R) fabric that blocks wind entirely while staying breathable-ideal for high-output training in transitional conditions. PrimaLoft(R) Active Evolve insulation offers adaptive warmth that adjusts to our intensity level, and the lightweight recycled face fabric keeps the vest soft and quiet. Reflective hits boost visibility on dawn or dusk miles, while the elastic cuffs and adjustable waistband help lock in heat right where we want it. It's the perfect mid-layer or standalone piece for fast, cold-weather efforts.