The insert of the mattress is a high-elastic plate of anti-allergic latex foam which includes natural rubber. Holes and ducts of appropriate sizes have been cut, in clearly designated places, in a plate in order to improve the virtues of usage. Thus, the whole surface of the mattress contains 3,5 or 7 zones of such hardness that is strictly adjusted to dynamic load. Latex is one of the most durable resources when it comes to mattress production.