Arcteryx Cerium SL Jacket - Women's Down^Nylon^Polyester^Synthetic^Taffeta Imported Breathable and insulated backcountry technical jacket with great warmth-to-weight ratio Wind- and moisture-resistant Thisela&trade; outer face fabric Thisela&trade; is a very stable and incredibly lightweight 7D ripstop taffeta that offers and excellent strength-to-weight ratio DWR finish (Durable Water Repellent) helps repel water from fabric surface Lightweight down jacket is both extremely compressible, packing down small into its included stuff sack