Body support cushions, such as mattresses, are disclosed. The cushions comprise a plurality of separate and distinct consecutive layers overlying over each other in a depth direction. Each layer includes thermal effusivity enhancing material with a thermal effusivity greater than or equal to 2,500 Ws.sup.0.5/(m.sup.2K) and a solid-to-liquid phase change material (PCM) with a phase change temperature within the range of about 6 to about 45 degrees Celsius. The total thermal effusivity of each of the cooling layers increases with respect to each other in the depth direction, and the total mass of the PCM of each of the cooling layers increases with respect to each other along the depth direction. At least one layer of the cooling layers includes a gradient distribution of the mass of the PCM and the amount of the thermal effusivity enhancing material thereof that increases in the depth direction.

A product and process for reducing discomfort due to heat and moisture evolved during a period of contact between living skin and a cushioning material, using a thermally conductive cushioning device, having a first layer of a moisture management fabric, a second layer of a thermally conductive web, and a third layer of a thermally insulative cushioning material.

A temperature modulation system for a bed, blanket, or other furniture includes a fluid for moderating temperature change, a number of conduit circuits for directing the fluid through respective zones, a control unit including a thermoelectric device for modulating temperature of the fluid, and a pump. Each of the conduit circuits selectively and independently directs fluid through its respective zone in order to produce a temperature within the zone that is independent of the temperature outside the zone. The system also includes an arrangement of one or more zones in an arrangement in which the control unit is programmed to vary the zone temperature over time according to a schedule.

A bed assembly includes a mattress that has rails that define an outer perimeter of the mattress and an inner core defined between the rails of the mattress. Springs are positioned within the inner core. A comfort layer including ventilation openings is supported by the rails of the mattress so that the comfort layer covers the mattress and the ventilation openings are in fluid communication with the inner core. In some instances, the comfort layer is positioned so that the ventilation openings are aligned with coil openings defined through the springs within the mattress.

A mattress topper is provided that includes a cover having opposing first and second panels each made from a first material. The mattress topper includes a gusset that either perimetrically joins the first and second panels and/or is in the form of one or more patches located on the first and/or second panels. The gusset is made from a second material that has a porosity that is different than that of the first material. A fill material is disposed within the cover.

A bed assembly includes a mattress that has rails that define an outer perimeter of the mattress and an inner core defined between the rails of the mattress. Springs are positioned within the inner core. A comfort layer including ventilation openings is supported by the rails of the mattress so that the comfort layer covers the mattress and the ventilation openings are in fluid communication with the inner core. In some instances, the comfort layer is positioned so that the ventilation openings are aligned with coil openings defined through the springs within the mattress.

Mattress assemblies including at least one encapsulated panel including a layer of fibers and/or foam saturated with a heat absorbing material. The layer is completely encapsulated with a liquid impermeable and flexible material. The heat absorbing material is not microencapsulated.

A mattress allowing an individual to sleep in a prone position is provided. The mattress includes one or more internal cavities providing airflow to an openings formed in the mattress. The openings, which may be selectively closed, are sized for an average adult and are connected by way of the cavity to outlets which allow airflow. The reinforced cavities have filters and other features to increase user comfort.

A bed sheet is provided that includes a knitted performance fabric having a plurality of spaced apart ventilation ports. The knitted performance fabric has a gauge per square inch, grams per square meter, air permeability and material content that are pre-selected to provide the knitted performance fabric with one or more selected physical features.

Mattress assemblies that provide user comfort and increased airflow generally include a viscoelastic thermally conductive infused polyurethane foam top layer; a composite comprising a bottom layer, a molded viscoelastic middle foam layer, and a perforated top viscoelastic foam layer, wherein the molded viscoelastic middle foam layer comprises a plurality of interconnected substantially parallelpipedal bodies, wherein each parallelpipedal body includes an opening extending from a bottom surface to a top surface and is separated from an adjacent parallelpipedal body by a V-shaped notch, and wherein the perforated top viscoelastic foam layer comprises a plurality of perforations extending from a bottom surface to a top surface thereof, wherein at least a portion of the perforations overlies the opening in the parallelpipedal bodies; and a base core layer, wherein the composite overlies the base core layer.