***When Purchasing Select Which Free Curb You Want As A Free Pack-In, Sharp Curved, Mild Curved Or Straight Curved Curb*** These are made of stone/cement...and are almost as smooth as glass. The colors are the stone color, this is not paint, the colors are solid throughout the ramp...this is approx. 13” long, 3” high in center and 2 1/2” wide at the center base.