Some of the bales here are wrapped almost completely in white plastic, but the most useful-looking ones just seem to have a plastic skin around the circumference, but the flat sides are not covered.
Sue
That way they can leave them sit there and not have to transport them to a barn. Its fun to watch those wrappers, funny thing on the back of the tractor picks them up and spins them around while wrapping them up. So you see this big haybale being spun around like the basketball on the showoff players finger.