Pack Rat

Pack Rat is a Fallout 2, Fallout: New Vegas and Fallout Tactics Perk.

You are efficient at arranging your inventory in general. This makes it much easier to carry that little extra you've always needed. This is useful for characters with low strength, i.e. sharpshooters and mediators.

Its usefulness is reduced in Fallout 2 with the addition of larger teams of traveling companions and the Highwayman's boot.