The versatile SITKA Ambient 100 Shirt Jacket delivers field-proven, adaptable warmth for wearing as a jacket or as a shirt. This SITKA shacket has rugged nylon fabric to resist snags and pilling, with built-in stretch and a durable water-repellent (DWR) finish to bead away light surface moisture. 100-gram PrimaLoft Evolve Insulation provides powerful warmth without the weight or bulk of ordinary insulated field jackets. This lightweight layer can take on on erratic weather for years to come. 100% nylon. Machine wash. Imported.Manufacturer style #: 600409. 100% nylon Rugged fabric to resist snags and pilling Built-in stretch DWR finish 100-gram PrimaLoft Evolve Insulation Center front-snap closure allows for easy on and off Zip hand pockets Zip chest pocket Regular fit