Cranial COVER is a postoperative cranial burr hole cover system made of PEEK-OPTIMAâ„¢, whose function is to completely cover the burr hole, thus avoiding postoperative skin concavities. Its ultra low profile (< 0.3 mm) and enhanced adaptability brings excellence in cosmesis and protection. This system provides a ready-to-use, sterile implant, which is placed without the need of any specific instrumentation.