A transparent acrylic window opposite the door invites “sneaking a peek.” Unlock each box to explore what’s behind the door. Retrieve the easy-to-grasp, chunky geometric shapes, then match shapes to boxes, dropping each shape through the cut-out in the top of its box. When play concludes, boxes fit securely on a storage tray. Each lock box measures 4 1/4″ square. Peekaboo Lock Box enhances fine motor, cognitive, and problem solving skills.