The Fatboy Concrete Seat is a multifunctional piece with style. Not only can it be used as a sitting stool, but also as a table or step stool. So, this is definitely a plastic stool that offers a world of possibilities, also when it comes to colors. The Concrete Seat is available in a variety of shades, just like the matching cushion. It looks like a simple concrete piece, but appearances can be deceiving. Is the stool too light? Then simply fill the bottom with sand or water for some extra stability. Finally, the Concrete Seat is made of polyethylene and suitable for indoor and outdoor use.