The covers are also equipped with several added features to ensure strength and durability. There are two triple-stitched, double riveted handles for easy removal and storage. Drain grommets are provided to allow water to escape from inside the skin cover. Two combination heat seal and vinyl protecting skid pads are incorporated to further protect the cover and minimize heat loss. This allows you to not only keep heat in, but keep leaves and dirt out allowing you to cut energy costs down.