Patent ID: 8859073

Claim:
A mat comprising: a base having a top surface and a bottom surface, a plurality of fibers projecting upwardly from the top surface of said base, a peripheral edge affixed to said base with an upwardly inclined top surface, a first layer affixed to the bottom of said base to provide friction with an underlying surface, a cavity surrounded by the fibers, base and first layer and extended through the fibers, base and first layer, an elastic insert located in the cavity, said insert having a top surface and a bottom surface, a second layer located on the bottom of said first layer and the bottom surface of said insert; an adhesive material securing the second layer and bottom surface of said insert to the second layer, and a replaceable member located in the cavity above the insert, said replaceable member having a front surface, and a bottom surface, and indicia on the front surface of the replaceable member for displaying a visual message; and a connector for releasably affixing said bottom surface of said replaceable member to said top surface of the insert such that the front surface of the replaceable member is located in generally a horizontal plane relative to the average highest point of said fibers.