Armor you wear no longer reduces your speed. You also reduce the armor’s armor check penalty by 1 + 1 per five caster levels (maximum 5).
Section 15: Copyright Notice – Pathfinder Roleplaying Game Ultimate Combat
Pathfinder Roleplaying Game Ultimate Combat. © 2011, Paizo Publishing, LLC; Authors: Jason Bulmahn, Tim Hitchcock, Colin McComb, Rob McCreary, Jason Nelson, Stephen Radney-MacFarland, Sean K Reynolds, Owen K.C. Stephens, and Russ Taylor.