1,100% natural plant fiber sponge. 2,high hydroscopicity 2,safer than PVA sponge ,no coloring and no additives 3,eco-friendly we are a factory of 100% natural "konjac sponge,"it is made of plant fiber.without any additive,suitable for babys!it is safer than pva sponge , softer than loofah sponge ,and cheaper than sea sponge!reply me with you email address,please,so i can send you our catalog . ...