Standard SMI-Spon 10 x 10 x 10 mm. Box with 32 pieces. SMI-Spon Gelatin Sponges are surgical hemostatic sponges made from highly purified first grade gelatin material. SMI-Spon is designed for use in various surgical procedures and quickly and effectively stops rapid bleeding. Reduces intraoperative bleeding and surgery time. When applied and used in proper amounts, SMI-Spon is completely absorbed in 3-4 weeks. SMI-Spon is biocompatible, non-pyrogenic and non-toxic. Products are gamma-sterilized and individually packed in ready-to-use blisters.