The first foam layer
The layered bed mattress as claimed in claim 13, wherein the first foam layer comprising visco-elastic foam; and a second foam layer having a generally planar third surface adjacent and substantially facing the second surface of the first foam layer, the second foam layer having a generally planar first support surface adapted to substantially face the user resting upon the bed mattress and having length and width dimensions sufficient to support a reclining body of a person, and a generally planar second visco elastic foam mattress surface opposite the first support surface, the first and second surfaces defining therebetween a substantially uniform undeflected thickness greater than that of the first foam layer. The layered bed mattress as claimed in claim 21, wherein the visco-elastic foam of the first foam layer is adhered to the second foam layer. It and a second foam layer having a density less than that of the first foam layer.
