Pathfinder's PouchBackpack 6
Source Pathfinder Lost Omens: Character Guide
Price 200 gp
Weight light
This unobtrusive belt pouch is popular among Pathfinders who operate in places where the Society is not welcome. It is constantly under the effects of a 3rd-level Magic Aura spell to appear non-magical. The pouch's normal space holds as much as an ordinary belt pouch, but it also has a small extradimensional space that holds up to 1 Bulk of items. A creature actively inspecting the pouch in its ordinary state discovers the existence of the extradimensional space only on a critical success to Search the pouch (see the Concealing an Item action of the Stealth skill), though when the extradimensional space is active, it's obvious to anyone examining the pouch that it is more than it seems.
Activate 
Interact
Effect You switch the pouch to allow access to its extradimensional space instead of its normal space, or vice versa. This lasts until you next activate it. Items in the other space are inaccessible and hard to find until you switch the pouch back.
Traits
Something of uncommon rarity requires special training or comes from a particular culture or part of the world. Some character choices give access to uncommon options, and the GM can choose to allow access for anyone. Less is known about uncommon creatures than common creatures. They typically can't be summoned. The DC of Recall Knowledge checks related to these creature is increased by 2.
AbjurationEffects and magic items with this trait are associated with the abjuration school of magic, typically involving protection or wards.
ExtradimensionalThis effect or item creates an extradimensional space. An extradimensional effect placed inside another extradimensional space ceases to function until it is removed.
InvestedA character can wear only 10 magical items that have the invested trait. None of the magical effects of the item apply if the character hasn't invested it, nor can it be activated, though the character still gains any normal benefits from wearing the physical item (like a hat keeping rain off their head).
MagicalSomething with the magical trait is imbued with magical energies not tied to a specific tradition of magic. A magical item radiates a magic aura infused with its dominant school of magic. Some items or effects are closely tied to a particular tradition of magic. In these cases, the item has the arcane, divine, occult, or primal trait instead of the magical trait. Any of these traits indicate that the item is magical.