The Nano Puff Pullover is a lightweight, windproof, water-resistant three-season jacket. It is made with 60 grams of highly compressible Primaloft ONE synthetic insulation. The shell is 15 denier polyester and the lining is 22 denier polyester. Shell and lining: 1-oz 15-denier 100% all-recycled polyester with a DWR (durable water repellent) finish. Insulation: 60-g PrimaLoft® One polyester. Recyclable through the Common Threads Recycling Program Size M Excellent Pre-worn Condition