LEADER JOY Montessori Materials Object Permanence Box Toddlers (Imbucare Box w/ Small Circularity) Practice hand eye coordination: Through the way of children pay allows the children to understand the concept of the permanent existence of objects - things that always be seen by the eyes do not mean disappearing (yes, it is like this, Before that they always thought that "Can't see" means "does not exist". It practices precise hand movements while sending information to the brain as well as develops hand, wrist and finger control  also known as refined hand movements. With repeated use of this material, the child learns how it feels to succeed when he has achieved a goal on his own. Composed of five blue wooden discs and a drawer wooden box. SERVICE: we can supply for free small accessory within 3 year after customers purchase products. If appear buyer receives goods and it was damaged (not human factor). The ability to train your baby&#039;s hand-eye coordination by coin-operating handmade 100% meet the stardard of the international REPORT EN71-3, ASTMF-973, follow the AMS &amp; AMI standard. Exercise the child&#039;s ability to predict, cognitive, and thinking skills, so that he initially recognized the object&#039;s persistence and stability. Size: 6.5 x 6.2 x 4.6 inches Weight: 1.46 pounds Suitable age: 0-3 years old