Made of die-cast and powder coated green. The set of four panels hook together just like the life size ones to form a pen like structure. They also can be connected with adjoining panels to from a large corral or pens. They are very durable and will last for many generations to enjoy. Each panels individual size is (3 1/2 X 5 1/2) are equivalent to the 1/32 scale animals. (farm animals are not included)