Pack Rat Feat 1
Source Pathfinder Advanced Player's Guide
Years of packing for travel have taught you how to cram vast quantities into small spaces. You can fit an additional 50% of the listed Bulk capacity into mundane storage containers or vehicles.
For example, you can fit 6 Bulk in a backpack, or 12 Bulk in a chest. This doesn't alter the items' Bulk, nor does it change how much you can store in a magical or extradimensional storage space, such as a Bag of Holding.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
RatfolkA creature with this trait is a member of the ratfolk ancestry.