3-1/2 x 5 Product size * Peel-n-Stick the Heating Pad You Can Wear * It provides soothing comfort for minor aches and pains as well as extended everyday warmth during outdoor sporting activities * Simply stick your Adhesive Body Warmer to an inner layer of clothing to enjoy over 12 hours of heat * 12+ Hours of warmth * Average temperature 127 degree F * 4.75 x 6.5 Package size