Exo Terra Turtle Pebbles, Small Argyle tank top spring and summer 2011 clothing collection for small dogs The smooth pebbles prevent injury to bottom dwelling or foraging turtles The variations of colours and patterns create a natural looking riverbed Round pebbles 0.3-0.4-inch, perfect for turtles with a shell diameter of 4-inch or less Available in 10-pound plastic pack with small size