River Rock is smoother than Pebble-Tec® type products. Smaller pebbles are smoother and less abrasive to swimmers. They combine natural aggregates with fortified polymer cement. It is a great product to utilize during pool renovations. Pool owners can choose from 6 different colors that can be blended to make other color schemes and shades. This surface is durable and reliable and can create a natural look that lasts for years to come.