Insert an activated warm pack inside the cozy Grabber Cold Weather Muff and keep your hands toasty-warm in a variety of cold weather activities and sporting events. Snap the muff around your waist with the adjustable quick-release belt, and you're ready to go. .5 inch of Dacron insulation and 14 oz. inner fleece fabric. Outside fabric is sheltered with a durable DWR water repellent coating. 13 inches long with 2.5 additional inches for the comfortable, elastic fleece cuffs. HEAT TREAT Mega Warmer included.