A combined mattress made of two components that allow you to change the firmness of the surface simply by turning it over. The base of the mattress consists of a 12 cm perforated latex sheet - flexible, hypoallergenic filling that replaces the spring block, easily ventilated thanks to the vertical perforation, and coconut fiber that gives firmness and orthopedic hardness to the mattress. Latex provides softness during use, while coir provides firmness. Special ecological additives prevent dust and parasites from entering the mattress. Winter - Summer.