The Elder Scrolls: Tamriel

This backpack has one central pouch (holds up to 80 lbs. or 8 cu. ft.) and two side pouches (20 lbs. or 2 cu. ft. each), all extradimensional. It always weighs 5 lbs. Retrieving an item takes an action, and the desired item is always on top. If pierced or overloaded, it’s destroyed and contents lost (except artifacts). Turning it inside out spills contents. A creature inside can breathe for 10 minutes. Placing it in another extradimensional space destroys both and opens a one-way Astral gate.