These fabulous sponges are crafted in France of 100% vegetable cellulose. Compressed to a flat, thin rectangle, each sponge expands to full size when immersed in water. They are highly absorbent & extremely gentle on dishware. Keep it compressed for easy storage until you are ready to use it. Run it through your dishwasher once in a while to keep it fresh. Throw it in your compost when it is time for a new one! Zero packaging, zero waste.Approximately 4 1/4" x 3 1/4" x 1" once expanded.