1. A prosthetic lightweight porous knit for hernia repair comprising a monofilament of a biocompatible polymer, wherein the knit comprises a mass per unit area ranging from about 40 to about 70 g/m2, an efficient porosity ranging from about 30% to about 70%, and an average bulging indication of less than 50 mm at a plunger force of 304 N or less than 45 mm at a plunger force of 147 N.