The Rab Xenair Alpine Light Jacket keeps our microclimate relaxed on the climb while still keeping us warm when taking in our hard-earned view. Strategically filled with synthetic fibers, this layer gives added insulation where we need it most and increased breathability in those high-heat areas. The wind's force is dulled by the Pertex fabric, and spindrift glances off the DWR-treated exterior, ensuring nothing can keep us from the top.