Polyhedron elastic ball for development infant intelligence

摘要

The present invention is designed to produce elastic balls made of various polyhedrons using EVA (Ethylene Vinyl Acetate Copolymer), which is harmless to the human body, to significantly reduce costs and improve infants' creativity and understanding of shapes. It relates to a polyhedral elastic hole for development.;The present invention is characterized by constituting an elastic hole of a polyhedron of which a plurality of outer surfaces are integrally connected using an ethylene vinyl acetate copolymer (EVA) as an element.