The 6 in. to 8 in. Black Pina Mexican Beach Pebble (2200 lbs. Super Sack) comes from the beaches of Baja, Mexico and have been naturally smoothed and tumbled by ocean waves for hundreds of years. These beautiful stones are the perfect material to be used for drought tolerant, water wise dry-scape landscaping and gardening. The color hues range from grey to charcoal to light black and will create a dramatic, natural affect when used in gardens, ponds and stream beds as well as around trees, walk ways, driveways and patio's. These stones protect soil from temperature extremes, restrain the growth of weeds and can also be used to help protect drainage areas from erosion.