Mattress

A mattress comprising a support base of a supportive resilient material defining an interface surface at the top thereof and a compressible layer of a material softer than the base material overlying the interface surface, wherein the thickness of the support base varies along a longitudinal direction such that the interface surface defines a concave laterally extending channel between first and second support surfaces for the upper and lower halves of a user's body respectively, wherein both the first and second support surfaces slope downwards away from the channel, wherein the first support surface slopes away from the channel at an angle of less than 10 degrees, and wherein said compressible layer substantially follows the profile of the interface surface and means for attachment to an adjacent mattress, to form a double mattress.

A mattress comprising a support base of a supportive resilient material defining an interface surface at the top thereof and a compressible layer of a material softer than the base material overlying the interface surface, wherein the thickness of the support base varies along a longitudinal direction such that the interface surface defines a concave laterally extending channel between first and second support surfaces for the upper and lower halves of a user's body respectively, wherein both the first and second support surfaces slope downwards away from the channel, and wherein said compressible layer substantially follows the profile of the interface surface and said compressible layer is of an increasing thickness above said first surface to provide a flat upper surface for said compressible layer in the region of the first support layer.