Abstract: A mat and a method for manufacturing the same are provided. The mat includes a first foam layer, a second foam layer and a third foam layer. The first foam layer has a first hardness and a first porosity. The second foam layer is connected with the first foam layer and has a second hardness and a second porosity larger than the first porosity. The third foam layer is connected with the second foam layer and has a third hardness and a third porosity smaller than the first porosity. The second foam layer includes a first connecting surface facing the first foam layer and a second connecting surface facing the third foam layer. The contact area between the first connecting surface and the first foam layer is different from the contact area between the second connecting surface and the third foam layer.

Abstract: A storage system comprises a rack of multiple platforms connectable to one another in a first direction, where each of the platforms has segments that connect to one another along a direction other than the first direction, via a user-operable coupling. The platforms are preferably rectangular, and are connected at their long ends. The segments of each platform are also preferably rectangular, but they are connected along their long sides. In such embodiments, the connection between platforms is perpendicular to the length of the rack, while the connection between segments is parallel to the length of the rack. The segments of individual platforms are preferably coupled together with snap fit connections, and supported from their undersides by transverse supports, and the transverse supports are supported from their undersides by longitudinal supports via recesses on the segments. The transverse supports are preferably perpendicular to the longitudinal supports.

Abstract: A storage system comprises a rack of multiple platforms connectable to one another in a first direction, where each of the platforms has segments that connect to one another along a direction other than the first direction, via a user-operable coupling. The platforms are preferably rectangular, and are connected at their long ends. The segments of each platform are also preferably rectangular, but they are connected along their long sides. In such embodiments, the connection between platforms is perpendicular to the length of the rack, while the connection between segments is parallel to the length of the rack. The segments of individual platforms are preferably coupled together with snap fit connections, and supported from their undersides by transverse supports, and the transverse supports are supported from their undersides by longitudinal supports via recesses on the segments. The transverse supports are preferably perpendicular to the longitudinal supports.

Abstract: An interlocking tile system comprises tiles that has a body, interlocking cap structure with a first surface and a second surface; a first curved portion connecting the first surface with a radius of R1 to the second engaging surface with a radius of R2, wherein R1>R2; and a stem supporting the cap structure. The cap is a mushroom-like shape. Such configuration of the connector aids in installation by lessening instances of binding and align and guide the caps into their corresponding receiving areas. The tiles are preferably square, and are connected along all four sides.