Warm, windproof, water-resistantthe Baby Nano Puff Jacket uses incredibly lightweight and highly compressible PrimaLoft Gold Insulation Eco 100% postconsumer recycled polyester with P.U.R.E. (Produced Using Reduced Emissions) technology, wrapped in a NetPlus 100% postconsumer recycled nylon shell and a 100% recycled polyester lining. Fair Trade Certified sewn.