Callaway's new range for Autumn/ Winter brings a whole host of fashionable designs accompanied by incredible technology that will not just keep you warm on the course, but also help to bring out the best in your game. Callaway's own Swing-Tech has been engineered into this jacket. Swing-Tech was designed by Callaway to give you the most amount of movement in a garment by having an incredible amount of stretch in the material especially in the areas that you need it most so that you can have the ultimate in freedom of movement.