Twist and Seal provides outdoor weather protection to keep electrical cord connections dry all year long. The product’s name—Twist and Seal—is derived from the way the device works. The foam on the inside of the unit is slightly larger than the plastic housing on the outside. As you push the shell together around two joined extension cord plugs and twist it, the foam creates a radial compression around the cord. The plastic housing is large enough to accommodate cord plugs of any size, from smaller holiday lights plugs to commercial-grade extension cords.The heavy-duty, weather-proof Twist and Seal is available in four colors—white, green, orange and blue. The suggested retail price is $8.95.