EVA elastic ball for development infant intelligence

摘要

The present design uses a material harmless to the human body of the infant, and relates to shot a plurality of projections projecting surface formed success, EVA (Ethylene Vinyl Acetate Copolymer) irregular arrangement on the ball surface in a variety of colors with the acoustic of a material constant It characterized in that the projections, the size and depth of each of said projections being formed of a plurality size led to a different set of at least one combination of more than one ball.