The shirt that is also a jacket. The Men's Smartloft 60 Shirt Jacket uses lightweight 88% recycled wool insulation to give you packable warmth that's breathable and insulating even when it gets wet. And, when you add its wind-resistant DWR-coated nylon shell to a Merino wool lining, you get a pretty solid piece of gear. It may not know if it's a shirt or a jacket, but it'll help make your winter adventures much warmer. Shell - 100% Nylon; Panels - 48% Merino Wool44% Polyester8% Elastane. Regular Fit. Insulation is lined with Merino for sweat and odor management. Stretchy knit panels target Merino next to skin and polyester against the elements while allowing for ease of movement. Snap front and cuffs. 2 zip chest pockets and open hand-warmer pockets. DWR Finish: DWR finish (Durable Water Repellent) helps repel water from fabric surface. Wind Protection: Wind-resistant panels protect against the elements. Imported.