Abstract: The present disclosure envisages a mattress that comprises a resiliently compressible foam shell defining a plurality of pockets along the breadth of the mattress, a bottom layer, a plurality of resiliently compressible block elements receivable in the plurality of pockets having predetermined varying compressibility values, and a flexible top layer. In one aspect of the present disclosure, the plurality of pockets is configured in the form of an array of rows and columns, wherein the rows are in parallel to a width of mattress and preferably seven in numbers and the columns are in parallel to length of mattress and number of columns varies with the width of the mattress. In another aspect of the present disclosure, the plurality of pockets is in the form of horizontal slots along the breadth of the mattress.