You can move a bit faster in armor than most people can.
Benefit: You suffer only half the normal penalty to your move rate for wearing medium or heavy armor.
For example, Dame Alaina is a human fighter in full plate. She has a base 30-foot move, which would normally give her a 20-foot move in heavy armor. If Dame Alaina has the Armored Hustle feat, she takes only half the move penalty from her armor, and has a 25-foot move.