Warm, windproof, water-resistant—the Nano Puff Jacket 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. Fair Trade Certified sewn. Nano Puff Jacket - Black