The Outdoor Plus OPT-31RP-BLK 31" Black Cazo Bowl™️ GFRC Concrete Planter Bowl. The Cazo Bowl ™ , in combination with TOP’s other Cazo collection bowls can make for a consistent and beautiful outdoor space. Our Planter Bowls are individually handmade and proudly manufactured in the U.S.A. The products we manufacture are durable and long-lasting in a variety of environments. Because of its handmade nature slight variations in color and texture may occur.