Non-Absorbable Sutures: Require removal after healing (e.g., nylon, polypropylene) – typically used on skin or external wounds.

Monofilament vs. Multifilament: Monofilament (single strand) reduces infection risk; multifilament (braided) offers better knot security.

Sizes and Needles: Available in various sizes and with different needle types (curved, straight, cutting, taper) depending on the procedure.