Pavestone .5 Cu. Ft. River Pebbles increase the beauty and health of our landscape. These pebbles help retain soil moisture and control erosion. Our Pavestone River Pebbles outlast mulch, they won't decay and they help prevent weed growth. River Pebbles are a multi-color that resists fading for long lasting beauty. Pavestone River Pebbles are ideal for gardens, pathways and other landscape projects.