The Micro Puff Hoody has the highest warmth-to-weight ratio of any synthetic jacket that Patagonia have ever made. The Micro Puff® maximises performance and minimises pointless fluff. It uses ultralightweight, water-resistant, down-like warmth with PlumaFill synthetic insulation to deliver a revolutionary feather-light down alternative. Fair Trade Certified™ sewn. Micro Puff Hoody - Women's Synthetic Insulation