Abstract: In a preferred embodiment, the present invention comprises a layer having carpeted upper surface and/or other rubber-like padding material covered by a translucent, elastomeric sheet. The upper elastomeric layer may have downwardly depending projections that engage the carpeted upper surface of the inner padding layer, thereby reducing the likelihood of the upper elastomeric layer from slipping relative to the inner padding layer. The upper elastomeric layer is sewn or otherwise affixed to the carpeted surface to prevent slipping and creasing of the upper elastomeric layer relative to the padding during use. In addition, in a preferred embodiment for use on carpeted surfaces, the lower elastomeric layer may have downwardly depending projections that engage in the underlying carpet surface to reduce slipping of the device relative to the underlying surface. An overcovering material may be provided to further protect the upper elastomeric layer from excessive soiling.