The Smartwool Men's Smartloft 120 Insulated Jacket is performance up front and breathability in the back. The front of the jacket features Smartwool's 120g proprietary 50% recycled wool insulation, giving you breathable, lightweight, packable warmth. The back panel is Smartwool's Sport Fleece fabric with a DWR finish, perfect for high-intensity workouts. Two zippered hand pockets and one zippered chest pocket with a media cord outlet means you can stow your keys and phone without worrying about them falling out. The jacket is also lined with Merino to make sure you're comfortable from the inside out.