Mountain Khakis Men's Alpha Switch Jacket 100% Other Fibers Imported Side 1 Fabric: 7.2 oz 90% Polyester 10% Spandex, Durable Water Repellent Side 2 Fabric: 1.1oz 96% Nylon 4% Polyester Rip stop, Durable Water Repellent Insulation: 80gm Polartec Alpha Insulation 7 Pockets Reversible Zipper