Ulanda is the best value for the money.It is 31 cm high.  Base layer is 7 zoned pocket spring system, topped with Green Tea Memory Foam, Latex, comfort foam. Great for spin, back pain. You will feel the even support from your back. Pocket spring system dramatically reduce the motion transmittion that your partner will bearly notice any movement. All the good values are wrapped down with Tencel fabric, which made this mattress so breathable and comfortable.