It can inspire children's imagination as well as promote their physical and intellectual development. NON-TOXIC and safe to use They are all non-toxic BPA Free Lead Free Phthalate Free. Manufacturered by AUEDC. Stacking Blocks Contains 20 pieces detachable and removable blocks can increase the baby's ability of creativity. The wood is smooth and the keys are well attached. Very durable and of the highest quality. This is a wonderful Educational shape toy for toddlers help kids learn shapes colors counting and hand-eye coordination.