Plan Toys are a green company, all Plan Toys products are produced using Chemical Free Rubber Wood (Hevea Brasiliensis), all trees used have ceased to yield latex, these would normally be felled and burned to make way for replanting. To keep the rubberwood pure, no fertilizer is added to the soil for three years before the trees are cut.The wood is carefully kiln dried to strengthen the wood & ensure pests and bacteria are not present. All designs include rounded corners to ensure child safety.