The medium-sized ones are called Dimensional Bags, resembling Man-Eating Bags; they look like large pouches that weigh the same regardless of how much you put into them, as long as it doesn't exceed the capacity limit. Based on their size, they are categorized as small, medium, large, super-large, giant, and super-giant Dimensional Bags.
The small ones can only hold up to one cubic meter of items, not exceeding a weight of one hundred kilograms, with their own weight being ten kilograms. The price starts at least at twenty-five thousand Gold Coins.
Remaining attributes double sequentially based on the characteristics of the small ones.
The super-giant Dimensional Bag can contain up to six cubic meters of items, weigh six hundred kilograms, and have its own weight of sixty kilograms. Its value would exceed one hundred and fifty thousand Gold Coins.