A body support cushion, e.g., mattress, has multiple foam layers, including a viscoelastic foam layer and a reticulated foam layer, and an outer cover. At least one of the foam layers and the outer cover each includes phase change material having latent heat properties that provide two intervals of dermal cooling.

A body support cushion, e.g., mattress, has multiple foam layers, including a viscoelastic foam layer and a reticulated foam layer, and an outer cover. At least one of the foam layers and the outer cover each includes phase change material having latent heat properties that provide two intervals of dermal cooling.

A body support cushion, e.g., mattress, has multiple foam layers, including a viscoelastic foam layer and a reticulated foam layer, and an outer cover. At least one of the foam layers and the outer cover each includes phase change material having latent heat properties that provide two intervals of dermal cooling.

A mattress assembly generally includes a tension adjustable and stretchable fabric panel coupled to a rail system. Axial tension of the stretchable fabric panel can be adjusted to change a firmness property associated with the mattress assembly.

A mattress assembly generally includes a tension adjustable and stretchable fabric panel coupled to a rail system. Axial tension of the stretchable fabric panel can be adjusted to change a firmness property associated with the mattress assembly.