Exo Terra turtle pebbles are smooth river pebbles that have rounded over time in fast moving rivers. The smooth pebbles prevent injury to bottom dwelling or foraging turtles. The variations of colours and patterns create a natural looking riverbed. Round pebbles 5/9-inch to 5/8-inch, perfect for turtles with a shell diameter of 4-inch or more. Easy to clean and re-use. Soak and disinfect pebbles by placing them in a large bucket of water for 15 minutes. Rinse until all of the visible particles are removed and the water runs clean. Comes in pack of 2. Available in 10-pound plastic pack with large size.