Warm, windproof, water-resistantthe Nano Puff® Vest uses incredibly lightweight and highly compressible 60-g PrimaLoft® Gold Insulation Eco 100% postconsumer recycled polyester with P.U.R.E. (Produced Using Reduced Emissions) technology, wrapped in a 100% recycled polyester shell and lining. Made in a Fair Trade Certified factory. Flaw: The quilting near the left bottom is uneven and has broken threads. Please refer to the pictures.