101494 - M Quick Duck Jefferson Vest Quick Duck® with 3M™ Thinsulate™ insulation for warmth. This insulation makes Quick Duck even lighter but just as warm as always. Work lighter. Work smarter. Outwork them all. • 8.5-ounce, 60% cotton/40% polyester canvas • Rain Defender™ durable water-repellent finish • Pockets upon pockets • Convenient media port • Lets you move with ease and without fatigue