Smooth Ultra-Thin 0 4mm Design Its hard smoother surface offers fluid accurate tracking optimized for optical sensors while its profile is 20 thinner to seamlessly become part of your desk Available in Small and Large sizes | Tough Polycarbonate Build Lab-tested to have incredible impact rip and tear strength the Razer Sphex V3 is well equipped to handle long hours of intense competitive gaming | Adhesive Base The mat s adhesive base helps it stay anchored to your desk through the most intense gaming but is easy enough to remove without leaving any sticky residue on your setup |