What makes these naked sponges stand out from many other similar products is that they're environmentally friendy, all-natural, biodegradable, and free of any dyes, colors, synthetic additives, or toxic chemicals. They're very handy, multi-purpose, and can be used for different types of cleaning and wiping, including dishwashing. And it's great that they can be sterilized by boiling or putting them damp into the microwave for 1 minute. Great product. Highly recommended.