Women’s mountain trekking hooded down jacket MT500 -10°CDown jacket with hood designed by our team of mountain trekking enthusiasts, for trekking in cold weather down to 10 C. How warm is this padded jacket? This padded jacket, worn as a 3rd layer, has been certified for an active comfort temperature of 10C during a standardised test in a thermal chamber. The model is wearing a synthetic long sleeved T shirt and a light fleece underneath. It works with a simulated 5 km h wind. We have also tested this