Mattress for those who prefer medium firm sleeping surface. The natural coconut fibre plate from one side increases the firmness, while the sea grass layer provides additional elasticity, orthopaedic effect and convenience for comfort and relaxation. "Sea grass" controls and ensures the balance of humidity and temperatures, and prevents electrostatic charge generation which affects overheating, high humidity level and discomfort. The independent spring block Pocket Spring ensures correct and even load distribution, increasing the quality of orthopaedic features. Double-sided Winter/Summer mattress.