No matter how bad conditions get on the mountain, you won't feel the cold wearing the Namak Insulated Jacket. That's because it's loaded with warm-when-wet Heatseeker Eco. But even though it's seriously cosy, it won't bog you down with unnecessary weight or bulk. Add to that a waterproof-windproof DryVent outer and you've got yourself a winter jacket that can stand up to the harshest alpine environments.