INSULATED JACKET MIXED WITH A FLANNEL SHIRT FOR CASUAL STYLE - THE PATAGONIA ISTHMUS QUILTED SHIRT JACKET.The flannel-style exterior of the Patagonia Isthmus Quilted Shirt Jacket has a DWR coating for water-resistance while the fleece lining with Thermolite insulation ensures wintry warmth. Now you can look nice and still be warm and cozy. FEATURESMade of 100% recycled nylon; lined with high-pile 100% polyester fleece (30% recycled); insulated with 100-g Thermogreen-