Abstract: A foam sheet material prepared by a single die-cut operation, to provide a foam sheet material with three foam panels connected by a living hinge, and with closure means on the outer edges of two of the panels. The die-cut sheet material is adapted to move between a flat, stacked, storing or packaging position and a vertically upright, cone-like-structure position.

Abstract: An interlockable foam pad adapted with other interlockable foam pads to form foam pad structures, such as a three-dimensional structure or a foam pad exercise mat. The foam pad comprises a core foam layer of a polyethylene foam layer, the top and bottom foam layers having a higher density than the polyethylene foam in the core foam layer, and having a thickness considerably less than the thickness of the core foam layer. The foam pad includes at least along one side edge, and typically along a plurality of side edges, a plurality of alternatingly spaced apart uniform male and female sections, and which sections are adapted to interlock together with slight hand pressure with the male and female sections of an adjacent foam pad.