Knit-Pak cord contains numerous interlocking points with the cord which, after soaking in hemostatic solution, carries greater quantities of liquid compared to twisted or braided cord.  Knit-Pak easily packs into the sulcus by compacting under pressure.  It will not fray and resists popping out of the sulcus. If touched by a bur, Knit-Pak will cut clean and not get entangled.