The skill to make such a pouch far exceeds that suggested by the small size of the item. Such pouches can carry almost any amount of items and no matter the amount within the pouch it never weighs more than the cloth it is made from. Essentially, it is the gateway to a small plane of existence, rather than a pouch. However, the magic of the pouch extends to a telepathic understanding of what the pouch owner wants when trying to retrieve an item. Thus, when the hand goes in to retrieve an item, that item is plucked out of the plane. A most useful item, and very rare.