In Hong Kong, TEP is the preferred approach for most surgeons who perform laparoscopic hernia surgery. In this trial, patients with inguinal hernia who is suitable for TEP are recruited. TEP will be performed in the usual manner. Surgeon will assess the size of hernia defect prior to mesh insertion. For patients with large hernia defect or bilateral inguinal hernia that required mesh fixation, they will be randomized in two groups: ProgripTM and non-ProgripTM group. For ProgripTM no addition fixation is necessary, while for non-ProgripTM fixation is indicated. As tacks are known to be associated with postoperative pain, fibrin glue is designated as the fixation method in non- ProgripTM group in this study.