Unlock each box to explore what's behind the door! This set of six wooden lock boxes is ideal for learning shape, color and spatial relationships. Sort the shapes into the appropriate boxes, view them throught the transparent, colored acrylic windows, and unlock the doors to retrieve them! Strengthens problem-solving and fine-motor skills. The chunky, solid wood shapes are easy to grasp, and all six boxes fit into a handy storage tray. Ages 2+. Each box measures 4.2"w x 4.2"d x 4.2"h.