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