The NANO-AIR ULTRALIGHT P/O by Patagonia is a lightweight and sporty synthetic fiber pullover, ideal for an extra boost of warmth in mountain activities.
Its sporty, snug design offers great comfort without adding excessive bulk, making it perfect as an insulating layer under a waterproof jacket. The front half-zip facilitates ventilation and allows for quick temperature adjustment, as well as simplifying the process of putting on and taking off the garment.