FIT & DESIGN: This is your new super-durable jacket for BP and warmups, built from materials that stretch to give you full movement, while dumping heat to help keep you comfortable UA Storm technology repels water without sacrificing breathability Durable, stretch-woven fabric is ultra-lightweight & lets you move 4-way stretch material moves better in every direction Back vent & underarm mesh panels for added breathability Rip stitch convertible sleeves so you can cut at the elbow seam for a short sleeve Open hand pockets & shaped, side-vent bottom hem Uses a fluorine-free water repellent treatment ADDITIONAL DETAILS: Main body fabric contains at least 80% recycled polyester, excluding trims & embellishments Loose: Fuller cut for complete comfort.