SuperBands are made from 11 layers of quality latex meaning they are extremely durable. Normal resistance bands don’t offer as much resistance and will also snap a lot easier. They will not last as long and whilst they are generally cheaper, you may end up spending more on buying a new set more regularly.
SuperBands also do not have handles unlike many resistance bands which means just one less part that can break. It also makes them a lot more convenient to carry in a bag, backpack or suitcase.