4Monster Portable Duck Down Camping Blanket Travel Blanket. This is a perfect travel blanket. It is lightweight and packable, easy to carry around. 20D380T nylon outer fabric with W/R coating makes it durable and has water repellant treatment to protect the insulation from moisture. Duck down fill provides exceptional warmth for its weight. There are 3 sizes and 4 colors that can meet your needs and style.