These all-natural sponges are compressed into thin, flat rectangles for convenient storage - Ready to expand to full size when immersed in water! Made in France! All of EZ Brite's products are phosphate-free. They never use bleach and nearly all of the products are 100% biodegradable and non-toxic. All of this allows solutions to return to the environment without adverse effects. EZ Brite also maintains a planet friendly manufacturing plant, recycling all possible materials from the manufacturing process and using recycled containers and products for the packaging and shipment of products whenever possible. Planet friendly, it matters!