Improved Grapple

Combat

You are skilled at grappling opponents.

Prerequisite: Dex 13, Improved Unarmed Strike.

Benefit: You do not provoke an attack of opportunity when performing a grapple combat maneuver. In addition, you receive a +2 bonus on checks made to grapple a foe. You also receive a +2 bonus to your Combat Maneuver Defense whenever an opponent tries to grapple you.

Normal: You provoke an attack of opportunity when performing a grapple combat maneuver.

Source: Pathfinder Core Rulebook