This 19 cm thick mattress is covered in 100% polyester fabric. Bonnell springs are located inside the mattress. The suspension is covered on both sides with felt and with a 2 cm thick layer of SKY CELL ST-23 polyurethane foam. The sides of the mattress are additionally reinforced with a 4 cm thick layer of the same SKY CELL foam. The outer polyester cover is hypoallergenic and can be removed from the mattress. The mattress is of H2 hardness, suitable for people weighing up to 90 kg who want a relatively soft mattress. Before use, wait 72 hours after developing the mattress at 22 degrees!