Foam article and method of preparation

A method of preparing a foam article having a top of soft foam of low density, a firm supportive bottom of foam of high density and a supportive side wall of foam of intermediate density, said method comprising:

• (a) placing a first formulation which will yield a firm foam in the center of a mold thereby partially filling said mold;
• (b) placing a second formulation which will yield a foam of intermediate density in said mold about the periphery of said first formulation thus forming a border;
• (c) permitting the first formulation to cream, foam and rise to about 10% to about 80% of its potential;
• (d) adding to the mold a third formulation which will yield a soft foam, said third formulation being liquid and having a higher specific gravity than the first formulation so that the third formulation passes through the first formulation and the first formulation will float upon the third formulation;
• and
• (e) allowing the three formulations to cream, foam, rise and cure to obtain a single foam article having a firm, foam layer, a soft foam layer and a border or side wall of foam of intermediate density, said layers and side wall being bonded and knitted together at their common boundaries during the curing process.