The mysterious movement of this natural wood puzzle toy continues to amaze people all over the world. Jacob’s Ladder is stamped with “Pennsylvania Lumber Museum” and logo. Ladder measures approx. 13 1/2″ long and 2″ wide, and consists of 6 wood squares laced together with ribbon. The movement of the squares is creates illusions, animal imitation, and tricks. A few examples are listed on the packaging. Natural wood grains make each Jacob’s ladder unique. Ribbon colors vary. Made in the USA.