| 摘要 |
PROBLEM TO BE SOLVED: To provide a mattress capable of providing comfortable sleep by finely dispersing body pressure in response to each body pressure according to the physical type, preference and the like of each individual and, even when the physical type, the preference or the like is changed, meticulously accommodating thereto.SOLUTION: A polyurethane foam mattress 1 formed by superposing an upper layer on a lower layer, comprises fitting members 4 that can be fitted around a plurality of protruding bodies 2t, formed on the upper face of the lower layer, where undercut shaping parts 4k of the fitting members 4 prevent the fitting members from being easily pulled out from the surface of the mattress in the vertical direction. This configuration can assemble the mattress without any use of adhesive or the like. A plurality of types of physical properties of each fitting member 4 are prepared so as to locally change the physical properties of the mattress. |
