Rapha Lightweight Short Sleeve Womens Base Layer Introducing Rapha's Lightweight Short Sleeve Womens Base Layer. Crafted from lightweight material, this base layer actively wicks sweat away from more→your skin, ensuring optimal comfort during intense rides. Its temperature regulation properties make it ideal for hot and humid conditions, while also providing versatile performance across a wide range of weather conditions. The soft and comfortable fabric acts as a barrier under your bibs and jersey, preventing chafing as you sweat. For optimal wear, pair this base layer with lightweight jerseys, fitting seamlessly under all jerseys in Rapha's range.