NVL_Bio Double Cog threads are the absorbable monofilament barbed sutures designed by patented technology for face lifting applications. Unlike other threads whose surfaces are cut or knotted or just mold to create cogs, the cogs of NVL_Bio Double Cog threads are created by mold cutting techniques to minimize the damage to the surfaces of the threads with remaining it thin (USP 2-0) therefore, the patient feels no discomfort from the presence of foreign materials in the face. BUT! Its tensile and anchoring strengths are superior to other thread products by patented unique technology.