Flexibility is an advantage suturing easier and improves precision. Knot-tying is easier and less traumatic with a flexible suture thread.
Braided threads are more flexible and, in general, have less memory than monofilament sutures, making them easier to handle.
Safil®, our suture made from polyglycolic acid, is known for its considerable flexibility. [8]    

[8] Borthwick R et al.; Experience in the clinical use of polyglycolic acid as an absorbable synthetic suture material; Veterinary record 1973, 92 (15), 386-391.