"Power assisted suit allows for faster movement than normal while still providing excellent body armour protection."
The Rubicon Power Assist is a vest made by Rubicon Industries in SAS: Zombie Assault 4 which features the highest movement modifier of any armor piece unaugmented, and also grants a boost to revive speed. Because of its high movement modifier, slight revive speed increase, and overall utility, it is widely used mid-game and late-game (as the or version), especially in speed-based builds.
Unfortunately, the Power Assist has pitiful defense; it is the fifth weakest piece of armor in the game, with only the non-vest HVM Kevlar pieces having inferior defense, contrary to what the description says.
At one point the revive bonus was removed, but was later added back on Feb 20th, 2015 due to the removal of the bonus being a bug.
The Rubicon Power Assist's appearance in the mobile port of SAS 4 is based off of the PC's original appearance.