STROMA. The classic hard Orthopaedic mattress with the correct back support for people who like to sleep on their back. Mattress covered by high quality Damask fabric with Aloe Vera and anti - acaria treatment. The fabric quilted with natural cotton wadding from one side, from other - with natural wool wadding. The mattress has bonell springs, spring wire diameter 2,30 mm, 110 springs per m2, the springs are connected to a flat steel wire frame. 7 year warranty for springs. Special springs reinforcement at sides giving additional support to the edges, not allowing, thus, the edge of the mattress to tilt downwards. Springs are covered with white cotton insulator and white hard cotton insulator acting as interlayer between springs and white thermo bonded cotton. Reinforced handles on the sides of the mattress, made of the same fabric as the mattress. Mattress height 23cm.