Product Details. Silk Laundry Weather Proof Long Blazer Black. Layer up with our most versatile piece of outerwear, designed to brave most weather conditions and ideal for keeping warm. Featuring deep side pockets with a single chest pocket, two mid button closures and a deep collar, our Weatherproof Long Blazer makes the perfect travel companion. Material: 100% Silk, 16 momme, knitted fabric with waterproof film