Zipper closure The 2.5 layer laminated material is a reliable barrier against wet and chill. It combines great durability and comfort next-to-skin, in a lightweight and compact fabric with a 15,000mm/15,000g/m2 waterproof and breathability rating. Durable Water Repellent (DWR) is a finish or coating added to Giro fabrics to make them water resistant so they can shrug off rain, snow, and damp conditions. Back Exhaust Ventilation allows warm air inside the garment to escape, enhancing thermal regulation, moisture management and overall comfort as you ride. Reflective details enhance visibility at nighttime or in low-light conditions when illuminated by a light source, such as headlights, by returning the light back toward the original source and reaching the automobile driver's eye. All seams are fully sealed with waterproof tape that's bonded to the garment, ensuring that seams and stitching don't allow water in. The Chrono Expert Rain Jacket is a go-to barrier against wet and chill thanks to 15,000mm waterproof / 15,000g/m2 breathable fabric that can be deployed with ease. The form-fitting silhouette features seam sealed construction, an exterior zipper guard plus a DWR coating to resist rain and damp conditions.