Mattress Medium Firm 10 Inch material description 1.Nine-zone spring bag  2.Natural latex 3.3E coconut fiber 4.Cashmere knitted fabric This Mattress Soft & hard dual-purpose (about 26cm thick) Feature: Applicable for whole family. As the one side is soft and the other side is hard, so that child can sleep on the back of mattress to protect vertebra, and the adult can sleep on the front. Soft and hard, double sides, more options for your good sleep.