HIC's Pop-Up Sponges for scratch-free cleaning of pots and pans, plates, glassware, barware, non-stick cookware, and anywhere dirt exists. Made from natural vegetable cellulose; durable and reusable; compressed for compact storage and easy transport; won't scratch surfaces. Simply add water and the sponges expand to full size; once the sponge expands, it won't return to its original compressed size. Tough on dirt, gentle on delicate surfaces; safe for nonstick cookware; dries quickly to reduce sour odors.