Zeiss Microscope Drape 48 X 82 Inch (221318_BX) 5/BXDrape has a number of features which assist ophthalmologic surgical staff in maintaining drape sterility, such as blue stickers indicating orientation for unfolding. Blue band is included to wrap around microscope body. There are three ports but because you may not need them all, there are stickers included which you can use to keep unused ports out of the way. There is a blue clip for the lens protector.