Pearl iZUMi Men's Pro Aero WxB Jacket 100% Other Fibers Imported Spring/summer 2017 Lightweight, packable protection from water and wind, with maximal breathability Fully seam sealed. Uses our most breathable 10K/30K waterproof Membrane. E Patented anatomic speed sleeve construction for fit, shape and comfort in the riding position. Waterproof front zipper Fabric: 100% Polyester