One side has soft bristles to clean glass, fine porcelain and smooth countertops. The second side has wavy silicone ribs for tougher scrubbing jobs plus a hard nylon tip to reach extra hard-to-remove dirt and grime. Safe to use on non-stick cookware and all other kitchen surfaces. Flexible and bendable to clean corners and edges. Use dry to remove lint and pet hair. Non-porous, food-safe silicone. To freshen and clean the sponge, wash in the dishwasher with other kitchen items.