Description About this product:- Object Permanence Box with drawer is a beautifully handcrafted wooden toy includes a wooden ball and a wooden box with a drawer. Object Permanence Box with drawer is a classic Montessori material that is introduced to infants once they can sit up independently, at approximately 6-12 months of age. This material aids in the child’s development of object permanence, while also honing their hand-eye coordination, fine motor skills, focus, and concentration.