Based on Rapha's best-selling favorite, the Classic II, this Women's Long-Sleeve version of the original employs an innovative merino blend and revamped construction for top-tier performance in the saddle. RPM190 fabric (Rapha Performance Merino--190 indicates the grams per square meter) brings light, soft, breathable, and temperature-regulating comfort to your ride to handle a wide variety of conditions on the road, while the one-piece bonded zip-guard reduces bulk and improves zip action to get you up and riding faster than ever before.