You coordinate efficiently in tight spaces.
Prerequisite(s): Dex 13, swarming racial trait.
Benefit(s): You can occupy the same square with up to two other creatures that also have this feat. If all participants also have the Tunnel Rat feat, up to four creatures can share the same space.
Pathfinder Player Companion: Blood of the Beast © 2016, Paizo Inc.; Authors: Alexander Augunas, John Compton, and Crystal Frasier.