Abstract: It is disclosed a foam mattress having an adjustable mattress core for adjusting and customizing its firmness. The foam mattress has a foam base having an upper surface defining a top recess; and a plurality of foam inserts each configured to be disposed and assembled into the top recess to fill the top recess and form the mattress core with a continued upper surface of the mattress. The inserts are provided with at least two different firmness of the foam, preferably with three different firmness of the foam selected from firm, medium and soft, producing as such an inexpensive, novel consumer-adjustable mattress in which the consumer can change the firmness of the entire mattress and/or the firmness on either side of the bed to accommodate each sleeper and/or the firmness under certain “body zones” within the mattress for their own personalized comfort preference and to reduce tossing and turning.

Abstract: It is disclosed foam mattresses or toppers, and methods of using them, comprising a top surface defining lateral deflective areas thanks to structural modifications of the foam comprising a plurality of slots, grooves, voids or channels. The invention (mattresses, toppers or methods) allows controlling postural alignment while providing ultra-low mattress-body interface pressures for all body areas regardless of recumbent position. The method comprises the step of providing into a core section of the mattress a plurality of structural modifications comprising slots, and/or voids, to form transversal deflective areas into the mattress. The invention is preferably achieved by CNC (Computer Numerical Control) cutting the structural modifications (channels, slots and voids) into the mattress foam which support each area of the body. It is also disclosed mattresses or toppers in which foam inserts are kept or removed from the channels to modulate the deflections on one or both sides of the mattress.

Abstract: It is disclosed a foam mattress or topper to control a whole body alignment, comprising: a first foam section defining an upper surface, a lower surface, a longitudinal direction allowing for longitudinally receiving a user's body, and a plurality of mattress areas comprising: an upper body receiving area for supporting user's upper body and shoulders; a lower body receiving area for supporting user's lower body; and a middle body receiving area for supporting a user's hip; and a first lateral channel within the upper body receiving area and extending in a lateral direction normal to the longitudinal direction of the mattress, the first lateral channel thereby allowing the upper body receiving area above the first lateral channel to displace downward to provide pressure reduction and alignment for the shoulder of the user's body. These mattresses and toppers have an ultra-low pressure capable of preventing sleep disturbance caused by pressure.

Abstract: A mattress supporting a reclining body with low body pressure and in alignment. The mattress extends in a lateral direction from side to side and extends in a longitudinal direction from a mattress head to a mattress foot where the mattress includes a head part, a shoulder part, a waist part, a hip part and a leg part. The reclining body has a displacement profile that causes the mattress to undergo differing vertical displacements when supporting the reclining body. The mattress core has displacement parameters varying to match the displacement profile of the reclining body while supporting the reclining body with low body pressure. The core has a plurality of regions where the vertical displacement in one or more of the regions varies to match the displacement profile of the reclining body to maintain the reclining body in alignment.

Abstract: A mattress for supporting a reclining body. The mattress includes a resilient top member having a top region possessing uniform displacement parameters and also includes resilient supporting means supporting the top member with variable displacement. The combination of members with uniform displacement parameters over members with variable displacement parameters enables the mattresses to support the body in alignment and with uniform low pressure.

Abstract: A mattress supporting a reclining body with low body pressure and in alignment. The mattress extends in a lateral direction from side to side and extends in a longitudinal direction from a mattress head to a mattress foot where the mattress includes a head part, a shoulder part, a waist part, a hip part and a leg part. The reclining body has a displacement profile that causes the mattress to undergo differing vertical displacements when supporting the reclining body. The mattress core has displacement parameters varying to match the displacement profile of the reclining body while supporting the reclining body with low body pressure. The core has a plurality of regions where the vertical displacement in one or more of the regions varies to match the displacement profile of the reclining body to maintain the reclining body in alignment.

Abstract: A mattress for supporting a reclining body. The mattress includes a resilient top member having a top region possessing uniform displacement parameters and also includes resilient supporting means supporting the top member with variable displacement. The combination of members with uniform displacement parameters over members with variable displacement parameters enables the mattresses to support the body in alignment and with uniform low pressure.