Abstract: A connective or supportive sheath comprising, consisting of, or consisting essentially of a hollow tube having a circumferential or perimeter wall, the wall having an inner surface and an outer surface, the wall comprising interconnected, radially projecting, partitions, the partitions forming radially extending pores, the pores extending from said inner surface through said outer surface, and wherein the tube is comprised of, consists of, or consists essentially of a flexible or elastic polymer.