Extradimensional Satchel

Sym-Tech Item, uncommon
This satchel opens up to a pocket universe that has an interior space considerably larger than its outside dimensions, roughly 2 feet in diameter at the mouth and 4 feet deep. The pocket universe can hold up to 500 pounds, not exceeding a volume of 64 cubic feet. The satchel weighs 15 pounds, regardless of its contents. Retrieving an item from the satchel requires an action.
If the satchel is overloaded, pierced, or torn, it ruptures and is destroyed, and its contents are lost. If the satchel is turned inside out, its contents spill forth, unharmed, but the satchel must be put right before it can be used again. Breathing creatures inside the satchel can survive up to a number of minutes equal to 10 divided by the number of creatures (minimum 1 minute), after which time they begin to suffocate.
Placing an extradimensional satchel inside any other items that similarly access extradimensional space or a pocket universe instantly destroys both items and tears a hole in spacetime that connects some other location in space. The tear originates where the one item was placed inside the other. Any creature within 10 feet of the tear is sucked through it to the new location and the tear then closes. The tear's wormhole is one-way only and can't be reopened.