This product is a set of 280 vintage American Bricks building blocks, made of wood and originating from the United States. The blocks weigh 3 pounds and are suitable for various age levels, including 4-7 years, 8-11 Years, 12-16 years, and 17 years & up. This set is unmodified and comes with a large quantity of bricks, perfect for creating various structures and games. American Bricks were manufactured by the Halsam Products Company of Chicago, Illinois, which created them in the late 1930s to 1940s.