Patagonia Men's Nano Puff Vest latest model windproof light Patagonia Mens Insulated Recycled Nano Puff Vest Nouveau Green Patagonia Mens Insulated Recycled Nano Puff Vest Nouveau Green Patagonia Nano Puff Vest Quilted Waistcoat Farlows. That extra layering piece you didn't know you needed! Meet the Nano Puff Vest by Patagonia, a must have for fall travel and preppy New Year's Eve events. This sleeveless vest in solid black boasts a zip closure and a stylish mockneck. Crafted from a 100% recycled polyester shell and lining, it features PrimaLoft Gold Insulation Eco, providing excellent warmth while staying lightweight. Care: Machine washable and suitable for tumble drying.