Arcane Backpack

This backpack has an interior space larger than its dimensions which are roughly 2 feet wide and 3 feet long and 1 foot deep.  The backpack can hold up to 1000 pounds, not exceeding a volume of 100 cubic feet. The backpack weighs 10 pounds, regardless of its contents. Retrieving an item from the backpack requires an action. Breathing creatures inside the backpack can survive up to a number of minutes equal to 100 divided by the number of creatures (minimum 1 minute), after which time they begin to suffocate.

Notes: Container