Grueling speed sessions may help you develop the snap to out-kick a rival, but they also mean you're generating a pretty brisk breeze. Luckily, the über-soft and incredibly flattering Windefend Half-Zip Jacket has a wind-resistant front panel - so the faster you go, the more it protects! Paired with a high-wicking knit fabrication, the jacket is comfortable enough to wear as a first layer and works as well for cycling as it does for running. Rugged 100% polyester Windefend fabric offers 4-way comfort stretch for maximum mobility, and is treated with an Omni-Shield advanced repellency finish to resist light rain and stains. The Omni-Wind Block front and back panels - made from 90% polyester, 10% elastane Slick Knit fabric - not only block wind to prevent chill, but also transfer excess heat and moisture. Omni-Wick advanced evaporation technology allows for quick drying, moisture wicking, and added breathability. Reflective detailing increases your visibility when you're commuting in traffic and the half-length front zipper allows you to quickly dump heat when you hit the big hill just before home. The low-profile, mock-neck collar and drop-tail back hem offer added coverage to protect against chilly air. Active fit. Imported.