Due to Colter’s styling and functionality, it has been very well received by customers and consumers alike, making it a certainty Sun Mountain would add a women’s jacket. In the insulated panels, they use 37.5® insulation which is chemical-free, provides an extreme weight-to-warmth ratio and never washes out or grows tired. The overall result is a multi-use, comfortable, ultra-lightweight technical piece that is warm, without the bulk.