The Women's Nano Puff Vest from Patagonia is lightweight and highly compressible, but also water and wind resistant and still nice and warm even when wet. On the outside, the Nano Puff Vest is made of tear-resistant recycled polyester. Inside it is insulated with PrimaLoft Gold in the Eco version and lined with recycled polyester. Brick-pattern quilting keeps the fill evenly distributed, and the drawcord hem and zipper cover keep the wind out. In good weather, the vest can be packed into the chest pocket and stowed or fastened wherever. In addition, the PrimaLoft Gold insulation is made with P.U.R.E. technology - produced with reduced emissions. The gilet is also Fair Trade certified.