Polartec® Power Stretch® PrimaLoft® jacket. The body and collar of the jacket are insulated with PrimaLoft® Gold that is incredibly soft, lightweight and water repellent. This is the perfect jacket to keep you warm on chilly days. The body has a silver lining that reflects the heat back to the body. The shoulders, sleeves and sides are made of Polartec® Power Stretch®, four-way stretch fabric that provides lightweight warmth and draws moisture away from the body. It's developed to expand easily and recover its original shape after demanding physical activities. Two zipped front pockets. Fit: Slim. Fabric 1: 100% Nylon Ripstop with DWR finish. Insulation: PrimaLoft® Gold insulation 133 g/m2. Fabric 2: Polartec® Power Stretch®: 84% Polyester / 16% Spandex.