Hydration-Activated Sutures

How does it expand?
Well, when it is placed in an aqueous environment, the salt particles within the silicone core elute out, leaving behind a micro-porous structure within the silicone core. These small voids are consequently filled with fluid as the core hydrates, resulting in radial expansion of the suture braid. This radial expansion of the braid causes an axial shortening of the total suture length.
Never will your knot loosen ever!