The Harkila Driven Hunt Insulated waistcoat is a warm, padded garment. It has a down filling on the front and thick Thermo Poly Shield™ Down Feel wadding on the back and sides, as well as an inner wool lining. This makes the waistcoat ideal as a beautifully warm midlayer on really cold winter days and as an outer layer over a shirt or jumper in the cool autumn.