Monofilament, synthetic, non-absorbable suture, color black, blue or undyed. Obtained from extrusion of polyamide 6.6 with a uniform cylindrical diameter. Tissue reaction is minimal. Nylon is a non absorbable material that with time,is encapsulated by connective tissue. Color: Green Normally used when confronting tissue in Neurological,Ophthalmic and Plastic Surgery.