HENGYAN Edition Montessori Toys for Babies 6-12 Months Object Permanence Box Wooden Ball Drop Toy Play for 6 Month 1 2 3 Year Old Toddlers Infant Early Age ToyQUIET DESIGN The Object Permanence Box with Tray contains a wooden box with tray and three wooden balls(wood, blue, orange). SUITABLE SIZE The size of the object permanence box and the drop balls is quit suit for 6 month and 1 2 3 year old toddlers, the size of the ball is 1. 77 inch, not too big to a kid's hands, but large enough to their mouth. EARLY DEVELOPMENT This ball drop toy practices precise hand eye coordination and indirectly allows the