The Nano Puff Jacket from Patagonia is an extremely compressible, moisture-resistant and well-insulated companion, designed for spring ski touring or mid-season belay breaks. The outer material is windproof recycled polyester, which also has a DWR impregnation. Hydrophobic, partially recycled polyester in the form of PrimaLoft Gold is used for insulation. To keep the lining in place, the jacket has quilted seams in a brick pattern and horizontal side seams; the wearing comfort is rounded off by a moisture-wicking inner wind flap. The cuffs are elasticated, the hem has a drawstring and the two side bags have zips. The chest pocket also has a zip and can be used as a pannier, which is why it also has a reinforced carabiner loop.