8 Cm thick jensen sleep 1 swan label top mattress u-90 split str.210X210. Have one core of 5 cm cellex xs foam. Cellex xs have one smooth past, the laws one grooved side. It grooved side experienced as softer past, the laws it smooth side experienced as tougher. Cellex xs have good air and wickable properties. Sleep in top is swan label past, the laws contains lyocell with sensity , as keeps bed fresher , more dry past, the laws more hygienically.