a braided , rather than woven , three - dimensional matrix has been developed to provide mechanical support in breast reconstruction or a mastopexy procedure . the braided three - dimensional matrix may be used to assist in hernia repair procedures . the matrix is a supple , strong , and flexible material , that can increase 50 % to 100 % in size when stretched along the vertical plane , but only extends by about 10 % to 20 % in length when stretched along the horizontal plane . although the matrix is degradable , it provides sufficient mechanical and structural support for six to twelve months following implantation to allow for repair or growth of the breast tissue or the abdominal wall . the matrix is formed of three - dimensional braided multifilament polymeric fibers plied to create yarn bundles , and wherein the matrix comprises an inter - connected , open pore structure that enables even and random distribution and in - growth of cells .