Mattress assembly and method

A mattress assembly comprising:

• a chassis comprising top and bottom walls and first and second sidewalls that each extend from the top wall to the bottom wall, the chassis including a base layer coupled directly to each of the walls and sidewalls such that the base layer extends continuously from the top wall to the bottom wall and from the first sidewall to the second sidewall, the base layer being permanently joined with each of the walls and each of the sidewalls, the walls and sidewalls each including opposite inner and outer surfaces, the outer surfaces defining outermost surfaces of the mattress assembly, the base layer and the inner surfaces defining an interior cavity, the top and bottom walls each comprising a first section that is connected to the first sidewall and a second section that is connected to the second sidewall such that the first sections are pivotable relative to the first sidewall and the second sections are pivotable relative to the second sidewall, the first section of the top wall being pivotable relative to the second section of the top wall and the first section of the bottom wall being pivotable relative to the second section of the bottom wall;
• a cover coupled to outer surfaces of the walls and the sidewalls;
• first and second spring assemblies positioned on top of the base layer, the second spring assembly being removeably coupled to the first spring assembly, the spring assemblies each directly engaging the base layer and the inner surfaces of the top and bottom walls, the first spring assembly having a firmness that is different than that of the second spring assembly;
• and
• a topper coupled to the cover such that the topper is positioned on top of the spring assembly, the topper being removeably coupled to the cover by a zipper,
• wherein the chassis is movable between a first configuration in which the sections each extend transverse to the sidewalls and a second configuration in which the sections each extend parallel to the sidewalls.

A mattress assembly comprising:

• a chassis comprising top and bottom walls and first and second sidewalls that each extend from the top wall to the bottom wall, the chassis including a base layer coupled directly to each of the walls and sidewalls such that the base layer extends continuously from the top wall to the bottom wall and from the first sidewall to the second sidewall, the base layer being permanently joined with each of the walls and each of the sidewalls, the walls and sidewalls each including opposite inner and outer surfaces, the outer surfaces defining outermost surfaces of the mattress assembly, the base layer and the inner surfaces defining an interior cavity, the top and bottom walls each comprising a first section that is connected to the first sidewall and a second section that is connected to the second sidewall, the first section of the top wall being connected to the second section of the top wall by a first hinge coupled to inner surfaces of the first and second sections of the top wall such that the first section of the top wall is pivotable relative to the second section of the top wall and the first section of the bottom wall being connected to the second section of the bottom wall by a second hinge coupled to inner surfaces of the first and second sections of the bottom wall such that the first section of the bottom wall is pivotable relative to the second section of the bottom wall;
• and
• a spring assembly positioned within the interior cavity such that the spring assembly directly engages the base layer and the inner surfaces of the top and bottom walls.