Moisture-resistant and used as a protective cover over the hive to provide extra insulation. Ideal for use with standard 10 Frame Langstroth Beehives. Can also prevent the hive's top from sticking to the boxes to prolong the life of your equipment. When used with a bee escape or cone, it will help the beekeeper remove bees from the hive during honey harvest. Standard usage is one inner cover per hive.