Benefit: If you are proficient with the madu, you may wield it and fight defensively with a –2 penalty instead of the normal–4 penalty for fighting defensively, and your attack penalty for using Combat Expertise improves by +1 (minimum –1 penalty). You cannot hold anything else in the hand that bears a madu. If you are not proficient in madu, treat it as a light spiked shield.
Pathfinder Companion: Adventurer’s Armory. Copyright 2010, Paizo Publishing, LLC; Authors: Jonathan Keith, Hal Maclean, Jeff Quick, Christopher Self, JD Wiker, and Keri Wiker.