Cotton Cage

 
Prerequisite(s): Improved Disarm, Improved Unarmed Strike, Base Attack Bonus 4+, loose robes or a cloak
 
Benefit: At the start of your turn, declare that you are using Cotton Cage. The next opponent who strikes you is automatically subject to either a disarm attempt (using the attack roll that struck you for the opponent’s disarm check) if using a melee weapon of a trip attempt (no attack roll required) if the opponent attacks unarmed. Clothes are considered to be one size larger than the character wearing them when determining size modifiers for disarm and trip checks. You cannot be disarmed or tripped as a result of a failed check. Cotton Cage takes the place of the characters attack of opportunity for the round and opponents with the Improved Grapple ability who attempt to initiate a grapple are not subject to Cotton Cage.
 
Source: Mongoose Ultimate Feats