Toysmith Jacob's Ladder The Jacob's Ladder makes use of a timeless optical illusion to enchant and confound children and adults alike. To set the toy in motion, hold the top block with the single ribbon facing outward. Rotate the wrist forward and backward and watch the blocks fall. Sturdy wooden construction holds up under hours of play. Detailed instructions for use and care are included. Recommended for ages 5 years and up. Challenge your children's imaginations and keep them active with Toysmith. Committed to providing the most imaginative toys along with the highest safety standards, Toysmith has toys appropriate for all age groups. Toysmith offers toys for any kind of play: active play, science and discovery, arts and crafts, impulse and novelty toys, and nostalgic retro classics. Made of 2" square wood blocks and colorful ribbon Optical illusion toy Hands-on fun that never grows old Ages 5 and up